unaccustomed is the antonym of accustomed Accustom is a verb meaning to cause to become accustomed. Verbs don't have antonyms like other words, take eat for example. The antonym seems to be starve, but it isn't. The only true antonyms for verbs are the negation of the verb. i.e. not eat, not accustom If you mean the regression of the verb, I should think it's to unaccustom, though, it certainly isn't a common word.
unaccustomed
Accustom is a verb.
I an accustom of watching television on weekends.
accustom, condition.
synonyms for accustomacquaintadaptacclimatizestaracculturatefamiliarizehabituate
inure
He needed some time to accustom himself to the new routine after starting his new job.
She is not accustomed to things like that ... (?)
There are three syllables. (ac-cus-tom)
The antonym of the word 'synonym' is 'antonym'.
NPR puzzle huh? Maybe INSURE and INURE Insure: To guarantee against loss or harm Inure: To accustom to hardship But inure has 2 syllables so I dunno I think it is Resign / Reign
An antonym means "opposite". So an antonym for the word synonym is antonym.