Synonyms for mentally ill

Most common

insane · unstable · unsound · intellectually disabled

All synonyms

Adjective

Definitions

1. adj. 1

   Having a psychological disorder.

Example sentences

• insane The like-to-dislike ratio on this video is insane.
• unstable Back in the 1990s, Algeria was incredibly unstable.
• unsound Your position is unprovable and unsound.

By length

3 letters

mad¹

5 letters

crazy²

6 letters

insane²

7 letters

unsound²

8 letters

unstable³

The small number after each word is its number of syllables (crazy² = 2 syllables).