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Definitions

self-interest

[self-in-trist, self-, -in-ter-ist] / ˌsɛlfˈɪn trɪst, ˈsɛlf-, -ˈɪn tər ɪst /
NOUN
egoism
Synonyms
STRONG
arrogance assurance boastfulness boasting bragging conceit conceitedness egomania egotism gasconade haughtiness insolence megalomania narcissism ostentation overconfidence presumption pride self-absorption self-confidence self-importance self-love self-possession self-regard self-worship selfishness superiority vainglory vanity
WEAK
egocentricity self-admiration swellheadedness vaunting
Antonyms
STRONG
humility meekness modesty shyness timidity
WEAK
altruism selflessness
NOUN
egoism/egotism
Synonyms
WEAK
arrogance assurance boastfulness boasting bragging conceit conceitedness egocentricity egomania gasconade haughtiness insolence megalomania narcissism ostentation overconfidence preoccupation with self presumption pride self-absorption self-admiration self-confidence self-importance self-love self-possession self-regard self-worship selfishness superiority swellheadedness vainglory vanity vaunting
Antonyms
WEAK
altruism humility selflessness
NOUN
narcissism
Synonyms
STRONGEST
arrogance self-absorption selfishness
STRONG
assurance boastfulness boasting bragging conceit conceitedness ego egoism egomania gasconade haughtiness insolence ostentation overconfidence presumption pride self-confidence self-importance self-love self-possession self-regard self-worship superiority vainglory vanity
WEAK
amour-propre egocentricity self-admiration swellheadedness vainness vaunting
Antonyms
STRONG
humility meekness modesty shyness timidity
NOUN
self-absorption
Synonyms
STRONGEST
arrogance egotism narcissism self-confidence selfishness
STRONG
assurance boastfulness boasting bragging conceit conceitedness egocentrism egomania gasconade haughtiness insolence megalomania ostentation overconfidence presumption pride self-centeredness self-importance self-love self-possession self-regard self-worship superiority vainglory vanity
WEAK
egocentricity self-admiration self-involvement swellheadedness vaunting
Antonyms
STRONG
humility meekness modesty shyness timidity
NOUN
self-centeredness
Synonyms
STRONG
arrogance assurance boastfulness boasting bragging conceit conceitedness egocentrism egomania egotism gasconade haughtiness insolence megalomania narcissism ostentation overconfidence presumption pride self-absorption self-confidence self-importance self-love self-possession self-regard self-worship selfishness superiority vainglory vanity
WEAK
egocentricity self-admiration self-involvement swellheadedness vaunting
Antonyms
STRONG
humility meekness modesty shyness timidity
NOUN
self-involvement
Synonyms
WEAK
arrogance assurance boastfulness boasting bragging conceit conceitedness egocentricity egocentrism egomania egotism gasconade haughtiness insolence megalomania narcissism ostentation overconfidence presumption pride self-absorption self-admiration self-centeredness self-confidence self-importance self-love self-possession self-regard self-worship selfishness superiority swellheadedness vainglory vanity vaunting
NOUN
vainness
Synonyms
WEAK
amour-propre arrogance assurance boastfulness boasting bragging conceit conceitedness ego egocentricity egoism egomania gasconade haughtiness insolence megalomania narcissism ostentation overconfidence presumption pride self-absorption self-admiration self-confidence self-importance self-love self-possession self-regard self-worship selfishness superiority swellheadedness vainglory vanity vaunting

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.

Blue Owl has said the transactions were “arm’s length,” meaning the parties were unrelated and acting independently in their own self-interest.

From The Wall Street Journal • Mar. 27, 2026

The lawsuit claimed the group of advertisers had acted against their own economic self-interest to conspire against the platform - saying this violated US antitrust laws designed to promote fair competition between companies.

From BBC • Mar. 26, 2026

Nations that believe they can outcompete anyone, anywhere embrace open markets as a matter of rational self-interest.

From Barron's • Mar. 20, 2026

Instead, it is wholly contingent and circumstantial, defined by what serves his own self-interest and corrupt needs and wants at any given moment.

From Salon • Mar. 10, 2026

Morrison seemed to have only one guiding force: his own self-interest.

From "Killers of the Flower Moon" by David Grann