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Definitions

bad faith

NOUN
breach of contract
Synonyms
STRONGEST
breach of trust
WEAK
breach of faith breach of privilege breach of promise
NOUN
disloyalty
Synonyms
STRONGEST
breach of trust infidelity sedition treachery treason
STRONG
apostasy deceitfulness disaffection double cross double-dealing faithlessness falseness falsity inconstancy perfidiousness perfidy violation
WEAK
betrayal of trust breaking of faith recreancy seditiousness subversive activity untrueness
Antonyms
STRONGEST
devotion faithfulness fidelity loyalty
STRONG
honesty truthfulness
WEAK
trueness trustworthiness
NOUN
double-dealing
Synonyms
STRONG
chicane chicanery deceit deception dishonesty duplicity fraud hypocrisy mendacity perfidy treachery trickery
WEAK
foul play fourberie hanky-panky sharp practice two-timing
Antonyms
STRONG
fairness forthrightness frankness honesty openness sincerity trustworthiness truth truthfulness uprightness
NOUN
hypocrisy
Synonyms
STRONGEST
bigotry deceit deception dishonesty duplicity fraud insincerity mockery
STRONG
affectation cant casuistry display dissembling dissimulation double-dealing falsity glibness imposture irreverence lie pietism quackery sanctimoniousness sanctimony speciousness unctuousness
WEAK
false profession lip service pharisaicalness pharisaism phoniness
Antonyms
STRONGEST
fairness frankness honesty openness trustworthiness truth truthfulness uprightness
WEAK
forthrightness righteousness sincerity
NOUN
infidelity
Synonyms
STRONGEST
adultery affair betrayal duplicity treachery
STRONG
cheating faithlessness falseness falsity inconstancy lewdness perfidiousness perfidy treason unfaithfulness
WEAK
extramarital relations treacherousness two-timing
Antonyms
STRONGEST
faithfulness honesty loyalty
WEAK
fidelity
NOUN
pharisaism
Synonyms
WEAK
affectation bigotry cant casuistry deceit deception dishonesty display dissembling dissimulation double-dealing duplicity false profession falsity fraud glibness imposture insincerity irreverence lie lip service mockery pharisaicalness phoniness pietism quackery sanctimoniousness sanctimony speciousness tartuffery two-facedness unctuousness
NOUN
phoniness
Synonyms
WEAK
affectation bigotry cant casuistry deceit deception dishonesty display dissembling dissimulation double-dealing duplicity false profession falsity fraud glibness imposture insincerity irreverence lie lip service mockery pharisaicalness pharisaism pietism quackery sanctimoniousness sanctimony speciousness tartuffery two-facedness unctuousness
NOUN
sanctimoniousness
Synonyms
STRONG
affectation bigotry cant casuistry deceit deception dishonesty display dissembling dissimulation double-dealing duplicity falsity fraud glibness imposture insincerity irreverence lie mockery pietism quackery sanctimony speciousness unctuousness
WEAK
false profession lip service pharisaicalness pharisaism phoniness tartuffery two-facedness
Antonyms
STRONG
fairness forthrightness frankness honesty openness respect trustworthiness truth truthfulness uprightness
NOUN
sanctimony
Synonyms
STRONG
affectation bigotry cant casuistry deceit deception dishonesty display dissembling dissimulation double-dealing duplicity falsity fraud glibness imposture insincerity irreverence lie mockery pietism quackery sanctimoniousness speciousness unctuousness
WEAK
false profession lip service pharisaicalness pharisaism phoniness tartuffery two-facedness
Antonyms
STRONG
fairness forthrightness frankness honesty openness respect trustworthiness truth truthfulness uprightness
NOUN
tartuffery
Synonyms
WEAK
affectation bigotry cant casuistry deceit deception dishonesty display dissembling dissimulation double-dealing duplicity false profession falsity fraud glibness imposture insincerity irreverence lie lip service mockery pharisaicalness pharisaism phoniness pietism quackery sanctimoniousness sanctimony speciousness two-facedness unctuousness
NOUN
two-facedness
Synonyms
WEAK
affectation bigotry cant casuistry deceit deception dishonesty display dissembling dissimulation double-dealing duplicity false profession falsity fraud glibness imposture insincerity irreverence lie lip service mockery pharisaicalness pharisaism phoniness pietism quackery sanctimoniousness sanctimony speciousness tartuffery unctuousness
NOUN
unfaithfulness
Synonyms
STRONG
apostasy defection dereliction disloyalty fickleness inconstancy perfidy treachery treason
WEAK
improbity recreancy
Antonyms
STRONG
devotion faithfulness fidelity loyalty

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.

Percival also warned that alerting lawmakers would be seen as “in bad faith and bordering on material misrepresentation to Congress.”

From The Wall Street Journal • Mar. 3, 2026

Among its accusations, the labor organization also alleged that guild management has “surveilled workers for union activity, terminated union supporters, and engaged in bad faith surface bargaining.”

From Los Angeles Times • Feb. 25, 2026

He also denies acting in "bad faith" against Llinos Griffin-Williams.

From BBC • Dec. 19, 2025

External link of acting in bad faith by considering additional duties on steel and aluminum products.

From Barron's • Dec. 10, 2025

I am afraid of seeming either to promise more than I can perform, which suggests complete irresponsibility, or to perform less than I can, which suggests bad faith and indifference.

From "Words Like Loaded Pistols" by Sam Leith