familiarize Antonyms
extemporize
have no clue about
have no connection to
have no experience of
have no familiarity with
have no insight into
have no knowledge of
have no relationship to
not be acquainted with
not be aware of
not be cognizant of
have never heard of
have never encountered
be unfamiliar with
unimproved
unacquaint
be in the dark about
be oblivious to
be a foreigner to
be a novice to
be a stranger to
be ignorant about
be unacquainted with
be unaware of
not be familiar with