UNACCUSTOMED TO

 I. (adjective) 

Sense 1

Meaning:

Not habituated to; unfamiliar with

Example:

unaccustomed to wearing suits

Classified under:

Adjectives

Similar:

new ((often followed by 'to') unfamiliar)

unused to (infrequently exposed to)

Antonym:

accustomed to (in the habit of or adapted to)

Credits