Thesaurus.com Dictionary.com

Definitions

trustworthiness

[truhst-wur-thee-nis] / ˈtrʌstˌwɜr ði nɪs /

NOUN

authenticity

Synonyms

STRONGEST

accuracy correctness credibility legitimacy purity reliability truthfulness validity

STRONG

dependability factualness realness

WEAK

veritableness

Antonyms

STRONGEST

inaccuracy

NOUN

constancy

Synonyms

STRONGEST

dependability perseverance steadfastness steadiness truthfulness

STRONG

adherence allegiance ardor attachment certainty decision determination devotedness devotion doggedness eagerness earnestness endurance faith fealty fidelity firmness follow through honesty honor integrity love loyalty permanence principle regularity resolution stability staunchness surety tenacity trustiness unchangeableness uniformity zeal

WEAK

abidingness unfailingness

Antonyms

STRONG

apathy disgrace dishonesty dishonor disinterest dislike disloyalty doubt enmity hate hatred hesitation indecision indefiniteness indifference instability irresolution lying treachery uncertainty unsteadiness vacillation wavering weakness

WEAK

change changeableness fluctuation inconstancy irregularity

NOUN

credibility

Synonyms

STRONGEST

chance integrity prospect reliability soundness validity

STRONG

believability likelihood plausibility possibility probability satisfactoriness solidity solidness tenability

Antonyms

STRONG

unlikelihood

WEAK

implausibility improbability unreasonableness

NOUN

credibleness

Synonyms

STRONG

believability credibility plausibility plausibleness reliability reliableness validity validness verisimilitude

WEAK

creditability creditableness

NOUN

creditability

Synonyms

WEAK

believableness credibility credibleness creditableness plausibility plausibleness reliability reliableness validity validness verisimilitude

NOUN

creditableness

Synonyms

WEAK

believableness credibility credibleness creditability plausibility plausibleness reliability reliableness validity validness verisimilitude

NOUN

dependence/dependency

Synonyms

WEAK

assurance belief credence expectation faith hope interdependence responsibility responsibleness stability steadiness stock trust trustiness

Antonyms

WEAK

freedom independence strength subtraction want

NOUN

faithfulness

Synonyms

STRONGEST

adherence allegiance fealty fidelity

STRONG

adhesion ardor attachment care constancy dependability duty loyalty piety truth

Antonyms

STRONGEST

disloyalty treachery

STRONG

disregard inconstancy

WEAK

dishonesty falseness

NOUN

fidelity

Synonyms

STRONGEST

devotion loyalty

STRONG

allegiance ardor attachment constancy dependability devotedness faith fealty integrity piety reliability staunchness steadfastness

WEAK

true-heartedness

Antonyms

STRONG

enmity

WEAK

disloyalty faithlessness inconstancy infidelity lying nonconformity treachery unsteadiness vacillation wavering

NOUN

honesty

Synonyms

STRONGEST

candor confidence fairness faithfulness frankness honor integrity loyalty morality probity rectitude responsibility self-respect sincerity veracity virtue

STRONG

bluntness conscientiousness equity fidelity genuineness goodness impeccability incorruptibility justness openness outspokenness plainness principle reputability right scrupulousness soundness straightforwardness straightness trustiness uprightness

WEAK

evenhandedness

Antonyms

STRONGEST

corruption disgrace dishonesty dishonor disloyalty distrust evil falsehood immorality unfairness

STRONG

unjustness

WEAK

artifice cheating deceit deception duplicity fraud fraudulence lying treachery

NOUN

honor

Synonyms

STRONGEST

courage decency fairness honesty morality virtue

STRONG

character chastity goodness honestness incorruption incorruptness innocence modesty morals principles probity purity rectitude righteousness truthfulness uprightness

Antonyms

STRONGEST

dishonesty evil immorality

STRONG

impurity indecency

WEAK

blemish censure condemnation debasement degradation denunciation derision disgrace dishonor disrespect humiliation ill repute reproach stigma

NOUN

incorruptibility

Synonyms

STRONG

bluntness candor confidence conscientiousness equity fairness faithfulness fidelity frankness genuineness goodness honor honorableness impeccability integrity justness loyalty morality openness outspokenness plainness principle probity rectitude reputability responsibility right scrupulousness self-respect sincerity soundness straightforwardness straightness trustiness uprightness veracity virtue

WEAK

evenhandedness upstandingness

Antonyms

STRONG

corruption disgrace dishonesty dishonor disloyalty distrust evil falsehood immorality inconstancy inequity injustice lying partiality treachery unfairness unjustness wrong

NOUN

loyalty

Synonyms

STRONGEST

adherence allegiance devotion faith fealty fidelity honesty honor integrity obedience patriotism reliability sincerity support tie

STRONG

ardor attachment bond conscientiousness constancy devotedness duty earnestness homage incorruptibility probity resolution scrupulousness single-mindedness singleness staunchness steadfastness subjection submission troth trueness trustiness truth truthfulness uprightness zeal

WEAK

inviolability trueheartedness

Antonyms

STRONGEST

disgrace dishonesty dishonor disloyalty lying treachery

STRONG

faithlessness inconstancy indifference

WEAK

undependability unfaithfulness

NOUN

plausibility

Synonyms

STRONGEST

believability soundness validity

STRONG

chance color credibility credibleness integrity likelihood plausibleness possibility probability prospect reliability satisfactoriness solidity solidness tenability

WEAK

creditability creditableness

Antonyms

STRONG

improbability unlikelihood

NOUN

plausibleness

Synonyms

STRONG

believability chance color credibility credibleness integrity likelihood plausibility possibility probability prospect reliability satisfactoriness solidity solidness soundness tenability validity

WEAK

creditability creditableness

Antonyms

STRONG

improbability unlikelihood

NOUN

probity

Synonyms

STRONGEST

integrity morality rectitude righteousness rightness sincerity truthfulness

STRONG

equity fidelity goodness honor justice uprightness virtue worth

Antonyms

STRONGEST

corruption dishonesty

STRONG

dishonor evil partiality unfairness

WEAK

deceit

NOUN

reliability

Synonyms

STRONGEST

accuracy authenticity honesty loyalty safety security soundness

STRONG

constancy faithfulness fidelity steadfastness

Antonyms

STRONGEST

danger falsehood

STRONG

disloyalty inconstancy treachery unsteadiness

NOUN

rep

Synonyms

STRONG

acceptability account approval authority character credit dependability distinction eminence esteem estimation fame favor honor influence mark name notoriety opinion position prestige privilege prominence rank regard reliability renown report repute respectability standing stature weight

WEAK

éclat

Antonyms

STRONG

disapproval disbelief disfavor dishonor dislike disregard disrespect ill repute inferiority insignificance lowliness unimportance

NOUN

reputation

Synonyms

STRONGEST

character fame honor influence name notoriety opinion position prestige prominence standing stature

STRONG

acceptability account approval authority credit dependability distinction eminence esteem estimation favor mark privilege rank regard reliability renown rep report repute respectability weight

WEAK

éclat

Antonyms

STRONGEST

unimportance

STRONG

disapproval disbelief disfavor dislike disregard disrespect

WEAK

disreputableness ill repute notoriety

NOUN

repute

Synonyms

STRONGEST

renown

STRONG

acceptability account approval authority character credit dependability distinction eminence esteem estimation fame favor honor influence mark name notoriety opinion position prestige privilege prominence rank regard reliability rep report respectability standing stature weight

WEAK

éclat

Antonyms

STRONG

disapproval disbelief disfavor dishonor dislike disregard disrespect ill repute inferiority insignificance lowliness unimportance

NOUN

repute

Synonyms

STRONG

character chastity courage decency dignity fairness goodness honestness honesty incorruption incorruptness innocence modesty morality morals prestige principles probity purity rectitude reputation respect righteousness status truthfulness uprightness virtue

WEAK

good name good report

Antonyms

STRONG

amorality badness corruption deceit dishonesty dishonor evil immorality impurity indecency lowliness lying unethicalness unfairness

NOUN

sincerity

Synonyms

STRONGEST

candor earnestness frankness genuineness goodwill impartiality probity reliability seriousness truth truthfulness veracity

STRONG

artlessness heart honor innocence justice openness singleness wholeheartedness

WEAK

bona fides good faith guilelessness sincereness

Antonyms

STRONGEST

dishonesty falsehood lying unimportance

WEAK

insincerity untrustworthiness

NOUN

upstandingness

Synonyms

WEAK

bluntness candor confidence conscientiousness equity evenhandedness fairness faithfulness fidelity frankness genuineness goodness honor honorableness impeccability incorruptibility integrity justness loyalty morality openness outspokenness plainness principle probity rectitude reputability responsibility right scrupulousness self-respect sincerity soundness straightforwardness straightness trustiness uprightness veracity virtue

NOUN

veraciousness

Synonyms

WEAK

accuracy actuality authenticity candor correctness credibility exactitude exactness fact fairness fidelity frankness genuineness gospel honest-to-god truth honesty honor impartiality integrity like it is openness precision probity real McCoy reality rectitude rightness sincerity straight stuff trueness truism truth truthfulness uprightness veridicality verisimilitude verity word

NOUN

veracity

Synonyms

STRONGEST

accuracy authenticity credibility fairness genuineness honesty impartiality integrity probity rectitude rightness sincerity truthfulness

STRONG

actuality candor correctness exactitude exactness fact fidelity frankness gospel honor openness precision reality trueness truism uprightness verisimilitude verity word

WEAK

honest-to-god truth like it is real McCoy straight stuff

Antonyms

STRONGEST

deceit dishonesty falsehood lying unfairness

STRONG

falseness hypothesis imprecision inaccuracy inexactness infidelity theory

WEAK

falsity

NOUN

veridicality

Synonyms

WEAK

accuracy actuality authenticity candor correctness credibility exactitude exactness fact fairness fidelity frankness genuineness gospel honest-to-god truth honesty honor impartiality integrity like it is openness precision probity real McCoy reality rectitude rightness sincerity straight stuff trueness truism truth truthfulness uprightness veraciousness verisimilitude verity word

NOUN

virtue

Synonyms

STRONGEST

advantage character ethic excellence faith generosity goodness ideal kindness love merit morality purity quality rectitude righteousness value

STRONG

arete asset charity chastity consideration credit faithfulness fineness fortitude high-mindedness hope incorruptibility innocence justice plus probity prudence respectability temper temperance uprightness worth worthiness

WEAK

ethicality ethicalness good point

Antonyms

STRONGEST

disadvantage dishonesty evil imperfection meanness

STRONG

disbelief disregard disrespect unfairness wildness

WEAK

dishonor immorality vice

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Beyond the dubious and prejudicial methodology, the poll was conducted online, which further undermines its trustworthiness.

From Salon • Apr. 13, 2026

She says that this safety-focus lives on into adulthood, which means that Finns value trustworthiness more than most.

From BBC • Mar. 18, 2026

Neither are Danish and Greenlandic doubts about the trustworthiness of the U.S.

From Los Angeles Times • Feb. 6, 2026

Meanwhile, participants who were only asked to submit a positive review ranked their likelihood of returning or recommending the market at 64 out of 100, while the trustworthiness score was 3.68 out of 7.

From The Wall Street Journal • Nov. 17, 2025

“Yeah, you’re right!” said Harry, and he felt even more cheered at the thought that Dumbledore had had some reservations, however faint, about Snape’s trustworthiness.

From "Harry Potter and the Deathly Hallows" by J.K. Rowling