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Definition of egoism

egoism

/ˈiːɡoʊˌɪzəm/
e · go · ism
Adverb:egoistically
•
Plural:egoisms
•
Adjective:egoistic
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egoism Lexical Profile

egoism Game Scores & Validity

• noun

1

An ethical or philosophical theory that treats self-interest as the foundation of morality and the primary motivation of all conscious action.

Example

"In the ethics seminar, the professor contrasted rational egoism with utilitarianism."

2

Excessive concern for oneself and one's own advantage, pleasure, or welfare, typically without regard for others.

Example

"His sheer egoism prevented him from seeing how his decisions negatively affected the rest of the team."

Synonyms
View all synonyms for egoism
Antonyms
View all antonyms for egoism

Word Nuance & Usage

Often confused with 'egotism': in careful usage, 'egoism' refers to a philosophical doctrine of self-interest or a general preoccupation with one's own welfare, whereas 'egotism' specifically denotes an inflated sense of self-importance and boastful talking about oneself.

• Rhymes for egoism

• Nearby Words

egocentric
egocentrically
egocentrism
egoism
egoist
egoistic
egoistical

Word Origin & Etymology

Coined in the late 18th century from Latin 'ego' (meaning 'I') combined with the suffix '-ism', modeled after French 'égoïsme'.

Cite this Entry

Wordmom. (2026). Definition of Egoism. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/egoism
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