Foolish synonyms

silly

Irresponsible, showing irresponsible behaviors.

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stupid (related)

Lacking in intelligence or exhibiting the quality of having been done by someone lacking in intelligence.

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nonsensical

Unintelligible, foolish, silly, absurd, etc.

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absurd (related)

Impossible to take seriously; silly:

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unwise

Not wise; defective in wisdom; injudicious; indiscreet; foolish.

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idiotic

Of, having the nature of, or characteristic of an idiot; very foolish or stupid

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preposterous

The definition of preposterous is something that is absurd or ridiculous.

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anile

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wacky

Eccentric or irrational:

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puerile

Immature, especially in being silly or trivial; childish.

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nutty

Odd, foolish, crazy, etc.

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unintelligent

Having or showing a lack or deficiency of intelligence

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doddering

Trembling, tottering, or exhibiting mental impairment associated with aging.

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inept

Showing a lack of judgment, sense, or reason; inappropriate or foolish:

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loony

Extremely foolish or silly.

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ludicrous

Idiotic or unthinkable, often to the point of being funny.

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rash

Resulting from or acting with ill-considered haste or boldness.

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ridiculous

Deserving of ridicule; foolish; absurd.

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witless

Lacking intelligence or wit; foolish.

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pathetic (related)

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asinine

Of or like an ass; esp., having qualities regarded as characteristic of asses; stupid, silly, obstinate, etc.

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fatuitous

Stupid; fatuous

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simple

Easy to understand, do, or carry out:

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senseless

Without consideration, awareness or sound judgement; unreasonable; unwise; stupid.

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knowledge (related)

So senseless as to be laughable

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batty

Mentally deranged; crazy.

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brainless

(Not comparable) Having no brain.

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crazy

The definition of crazy is someone or something that is insane or not mentally sound.

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daft

(Scot.) Merry or frolicsome in a giddy way

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dizzy

Dizzy is defined as feeling lightheaded or dazed as if from spinning.

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dumb

Conspicuously unintelligent; stupid:

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fatuous

The definition of fatuous is foolish or silly.

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goofy

(Informal) Like or characteristic of a goof; stupid and silly

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half-witted

Having a low intelligence; dim-witted

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harebrained

Having or showing little sense; foolish:

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inane

Purposeless; pointless

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heedless

Unaware, without noticing

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imbecile

(Dated) Destitute of strength, whether of body or mind; feeble; impotent; especially, mentally weak.

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imprudent

Not prudent; without thought of the consequences; lacking in judgment or caution; rash; indiscreet

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insensate

Senseless; foolish; irrational.

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irrational

Irrational is defined as lacking reason or understanding.

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zany

Comical or ludicrous because of incongruity or strangeness.

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thoughtful (antonym)

Exhibiting or characterized by careful thought:

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mindless

(Of a thing done) Overly repetitive and unchallenging.

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imbecilic

Like or as an imbecile; so senseless as to be laughable; absurd, foolish, stupid, idiotic.

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lunatic

Lunatic is defined as someone or something that is wild, crazy or absurd.

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moronic

Showing foolishness or stupidity.

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tomfool

Extremely foolish or stupid.

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unearthly

Ridiculous, ludicrous, or outrageous.

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loopy

Slightly crazy

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balmy

(Informal) Foolish; slightly crazy or mad; eccentric.

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dippy

Not sensible; foolish.

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sappy

(US) Excessively sweet, emotional, nostalgic; cheesy; mushy. (British equivalent: soppy)

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goosy

Relating to or resembling a goose.

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dopy

Alternative spelling of dopey.

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foolhardy (related)

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feeble (related)

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gullible (related)

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boneheaded

(Slang) like a bonehead

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ability (related)

Displaying a complete lack of forethought and good sense

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planned (related)

Existing or designed according to a plan

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anserine

(Zoology) Being from the subfamily Anserinae of the family Anatidae.

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cockeyed

Foolish; ridiculous; absurd:

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sensible (antonym)

(Archaic) Able to feel or perceive.

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wise (antonym)

(Slang) Rude and disrespectful; impudent.

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unfoolish (antonym)

nonsensical, idiotic

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cautious (antonym)

Full of caution; careful to avoid danger; circumspect; wary

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careful (antonym)

(Archaic) Feeling or causing sorrow, worry, etc.; anxious

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prudent (antonym)

Sagacious in adapting means to ends; circumspect in action, or in determining any line of conduct; careful, discreet, sensible; -- opposed to rash; directed by prudence or wise forethought; evincing prudence;

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circumspect (antonym)

Circumspect is defined as cautious and unwilling to take risks.

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weak-minded

Lacking judgement

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insane

Characterized by insanity or the utmost folly; chimerical; unpractical; as, an insane plan, attempt, etc.

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mad

(Slang) Excellent; wonderful:

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softheaded

Lacking judgment, realism, or firmness.

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jerky

(Slang) Foolish; silly:

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dopey

Stupid, silly.

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goosey

(Slang) Nervous; jumpy

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gooselike

Resembling or characteristic of a goose.

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presumptuous (related)

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naive (related)

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vain (related)

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arrogant (related)

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cowardly (related)

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hypocritical (related)

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selfish (related)

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rude (related)

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indiscreet

Not discreet; lacking prudence, as in speech or action

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serious (antonym)

The definition of serious is showing deep thought, not joking, or a situation that requires careful thought.

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insagacious

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Foolish synonyms

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Foolish Sentence Examples

Words that mention foolish in the Dictionary

Words near foolish in the Thesaurus