unaccustomed
Concise Oxford English Dictionary © 2008 Oxford University Press:
unaccustomed/ʌnəˈkʌstəmd/
▶adjective
- 1 not customary; unusual.
- 2 (unaccustomed to) not familiar with or used to.
– derivatives
unaccustomedly adverb.
unaccustomedly adverb.
'unaccustomed' also found in these Oxford entries:

