- not accustomed or habituated; not used (to): unaccustomed to such kindness
- not usual; strange: an unaccustomed action
- Not common or usual: “The legislature has produced a new budget of unaccustomed austerity” (People).
- Not being habituated. Used with to: is still unaccustomed to a life of stress.
(comparative more unaccustomed, superlative most unaccustomed)
- Not prepared by life experience to an event or thing, not accustomed.
- He is unaccustomed to the cold.
un- +"Ž accustomed