Insane

/ɪnˈseɪn/

Meaning & Definition

adjective

In a state of mental illness or madness.

The patient was deemed insane after a thorough psychological evaluation.

Extremely foolish or irrational; wild.

It was insane to think that he could jump off the roof and land safely.

Incredibly exciting or extreme; extraordinary.

The crowd went insane when the band started playing their hit song.

Middle English: from Latin 'insana', from 'in-' meaning 'not' + 'sana' meaning 'healthy'.

insane in the membrane

Crazy or mentally unstable.

insane asylum

A place where mentally ill individuals are housed.

driving me insane

Causing someone to feel extremely frustrated or anxious.

insanity

The state of being seriously mentally ill; madness.

sane

Of sound mind; rational.

demented

Driven to behave irrationally due to anger, distress, or excitement.

Wild or extreme.

That party was insane!

Unbelievable or extraordinary.

The concert was insane; I've never seen anything like it!