EN

Synonyms for crazy

Most common

insane mad lunatic crazed half-baked soft-headed

Synonyms by meaning

Adjective

1. Insane — of unsound mind; insane; demented

insane, mad, demented informal, bonkers informal UK, lunatic, crazed, weird, bat-shit, batshite UK, deranged, daft informal UK AU NZ, strange, ga-ga, nuts informal, psycho, zany, screwy informal, sick, idiotic, psychotic informal, excited, unhinged, unbalanced

2. Half-baked

half-baked, soft-headed

Other

amazing, shaky, wild slang, insaniac slang

Noun

1. Looney — an insane or eccentric person; a crackpot

looney, mad cap, weirdo, screwball informal, crackpot informal, nut case

Definitions

  1. adj. 1

    Of unsound mind; insane; demented.

    His ideas were both frightening and crazy.

  2. adj. 2

    Out of control.

    When she gets on the motorcycle she goes crazy.

  3. n. 1

    An insane or eccentric person; a crackpot.

Forms

Plural
crazies → looneys, weirdos, screwballs, crackpots…

Example sentences

  • weird I may be imagining it, but something smells weird.
  • insane The like-to-dislike ratio on this video is insane.
  • lunatic Gunter was yelling at the cops like a lunatic to help him.
  • crazed Gunter heard a crazed howling outside.
  • amazing How amazing that your mother speaks six languages!

Popularity over time

Word1850 → 2019Trend
crazyrising
weirdrising
insanerising
lunaticrising
crazedrising
amazingrising

Use in printed books, per decade from 1850 to 2019.

By length

3 letters
mad1
4 letters
sick1, wild1, nuts1, dots1, daft1, zany2
5 letters
weird1, shaky2
6 letters
insane2, psycho2, weirdo2, crazed1, looney2, screwy2
7 letters
amazing3, excited3, strange1, lunatic3, idiotic4, bonkers2
8 letters
deranged2, demented3, unhinged2, crackpot2, batshite, insaniac
9 letters
psychotic3, screwball2
10 letters
unbalanced3

The small number after each word is its number of syllables (zany2 = 2 syllables).

In other languages

Français
fou
Italiano
demente
Español
loco
Deutsch
wahnsinnig
Català
boig