Fool
Fool noun - A person who lacks good sense or judgment.
Usage example: only a fool would attempt to climb that mountain unprepared
Idiot is a synonym for fool in moron topic. In some cases you can use "Idiot" instead a noun "Fool", when it comes to topics like person, ability, dunce, simpleton. popular alternative
Idiot
Idiot noun - A stupid person.
Usage example: only an idiot would invest in a company just because a casual acquaintance recommended it
Fool is a synonym for idiot in moron topic. You can use "Fool" instead a noun "Idiot", if it concerns topics such as person, ability, dunce, oaf. popular alternative
Mutual synonyms
How words are described
| complete | complete fool | complete idiot |
| utter | utter fool | utter idiot |
| total | total fool | total idiot |
| naive | naive fool | naive idiot |
| Other adjectives: ignorant, bumbling, stupid, poor, selfish, real, big, pompous, arrogant, reckless, incompetent, weak, little, absolute, useless, harmless, crazy, bloody, drunken, blind, insane, lucky, gullible, bigger. | ||
Both words in one sentence
- As one person says, "He's a fool, not an idiot." Odd Friendship: Ilya's mentors, a shaman and a priest.
Source: Literature / Firebird (Lackey) -
While Koyomi has the "idiot hair" and does occasionally act the fool, let it be said that he's less an idiot than a Deadpan Snarker hero type with Expressive Hair.
Source: Idiot Hair - The entire mane cast is handed an idiot ball in the first episode of Season 2, where Discord manages to fool all the main cast but Twilight with tricks a person with half a brain wouldn't have fallen for.
Source: Idiot Ball / Western Animation
Cite this Source
Idiot and Fool. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/fool/idiot
Fool & Idiot. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/fool/idiot>.
Idiot or Fool. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/fool/idiot.
Google Ngram Viewer shows how "fool" and "idiot" have occurred on timeline