insanest

in·sane

I i

Definitions of insanest word

adjective insanest not sane; not of sound mind; mentally deranged. 1
adjective insanest of, relating to, or characteristic of a person who is mentally deranged: insane actions; an insane asylum. 1
adjective insanest utterly senseless: an insane plan. 1
adjective insanest superlative form of insane: most insane. 0

before 1550

One of the 31% oldest English words

From the Latin word insānus, dating back to 1550-60. See in-3, sane

noun

adjective

verb

adverb

pronoun

preposition

conjunction

determiner

exclamation

A common word. It’s meaning is known to most children of preschool age. About 95% of English native speakers know the meaning and use the word.

Most Europeans know this English word. The frequency of it’s usage is somewhere between "mom" and "screwdriver".

This diagram is provided by Google Ngram Viewer