insane

adjective

Exhibiting unsoundness or disorder of mind; not sane; utterly mad.

Used by or relating to insane people.

Causing insanity or madness.

(informal) Characterized by excess or the utmost folly; ridiculous; impractical.

(slang) Extremely good; incredibly amazing.

(informal) Enraged; furious.

Roots

sanussan- · Latin · healthy, sound

Synonyms & related words for insane

Find synonyms, related words, and the definition of insane — including mad, crazy, brainsick, lunatic, bonkers, bedlamite. Dendril is a free visual thesaurus that shows them on an interactive map where stronger matches sit closer to the center — no signup, no ads.

Words related to insane

Explore words related to insane — words associated with it, words that go with it, and its nearest matches in meaning. Related words include harebrained, madman, doolally, meshuggener, ravingly, meshuga, insanely, insanity. Click any word to make it the center of the map and keep exploring the web of connections.

Synonyms for insane

Common synonyms for insane include mad, crazy, brainsick, lunatic, bonkers, bedlamite, demented, loony — words that share a close meaning. Hover or tap any word on the map for its definition and part of speech.

Where does insane come from?

The word insane breaks down into one root of Latin origin: the root san-, from Latin sanus (“healthy, sound”). Explore each root to see other English words built from the same source.