adjective not customary or usual; `an unaccustomed pleasure`; `many varieties of unaccustomed foods`; `a new budget of unaccustomed austerity` Found on https://www.encyclo.co.uk/local/20974
not accustomed or habituated: to be unaccustomed to hardships. · unusual; unfamiliar: A brief after-dinner speech is an unaccustomed pleasure. Found on https://www.infoplease.com/dictionary/unaccustomed