Synonyms for insane
- adjective
Synonyms by meaning
Adjective
1. Crazy
crazy, mad UK, lunatic, demented, crazed, bonkers informal UK, deranged, psychotic, batty, screwy, maniacal, harebrained, psycho, nuts informal, certifiable, loopy, eccentric, idiotic, daft informal UK AU NZ, weird, barking mad informal UK NZ, cracked
2. Nutso
bat-shit, batshite UK, nutso informal, looney, schizophrenic, ga-ga, loony tunes slang
Other
non compos, unsound, barking, crack brained, fruit loops, cray slang, cray-cray slang, doolally slang UK IE, nucking futs slang, batpoop slang, nonsane dated, yampy rare UK
Definitions
- adj. 1
Exhibiting unsoundness or disorder of mind; not sane; utterly mad.
- adj. 2
Used by or relating to insane people.
- adj. 3
Causing insanity or madness.
Related words
- Word family
- insanely insaneness insaniac insanity
- Phrases
- insane asylum drive someone insane
Example sentences
- crazy He must be crazy to go out in this stormy weather.
- lunatic Gunter was yelling at the cops like a lunatic to help him.
- crazed Gunter heard a crazed howling outside.
- demented He became increasingly demented!
By length
- 3 letters
- mad1
- 4 letters
- nuts1, daft1, cray1
- 5 letters
- crazy2, weird1, batty2, loopy2, nutso, yampy
- 6 letters
- psycho2, crazed1, looney2, screwy2
- 7 letters
- cracked1, barking2, lunatic3, idiotic4, bonkers2, unsound2, batpoop, nonsane
- 8 letters
- deranged2, demented3, maniacal4, doolally, batshite
- 9 letters
- eccentric3, psychotic3
- 11 letters
- certifiable, harebrained2
- 13 letters
- schizophrenic4
The small number after each word is its number of syllables (crazy2 = 2 syllables).