'Unaccustomed' definitions:

Definition of 'unaccustomed'

(from WordNet)
adjective
Not habituated to; unfamiliar with; "unaccustomed to wearing suits" [ant: accustomed]
adjective
Not customary or usual; "an unaccustomed pleasure"; "many varieties of unaccustomed foods"; "a new budget of unaccustomed austerity"

Definition of 'Unaccustomed'

From: GCIDE
  • Unaccustomed \Un`ac*cus"tomed\, a.
  • 1. Not used; not habituated; unfamiliar; unused; -- with to. [1913 Webster]
  • Chastened as a bullock unaccustomed to the yoke. --Jer. xxxi. 18. [1913 Webster]
  • 2. Not usual; uncommon; strange; new. [1913 Webster]
  • What unaccustomed cause procures her hither? --Shak. [1913 Webster]

Synonyms of 'unaccustomed'

From: Moby Thesaurus