From Longman Dictionary of Contemporary Englishunfamiliarun‧fa‧mil‧i‧ar /ˌʌnfəˈmɪliə◂ $ -ər◂/●くろまる○しろまる○しろまる adjective1NOT KNOWnot known to youunfamiliar surroundings/place/environment etcShe stood on deck to gaze at the unfamiliar surroundings.a crowd of unfamiliar facesunfamiliar toSome of the technical vocabulary may be unfamiliar to you.2 →be unfamiliar with something —unfamiliarity /ˌʌnfəmɪliˈærəti/ noun [uncountable]Examples from the Corpusunfamiliar• The voice on the phone sounded unfamiliar.• The resulting look may not have been pretty on the final day, but neither was it unfamiliar.• She spoke with an unfamiliaraccent.• Driving on the left-hand side of the road was unfamiliar and a little frightening.• Scientists and policy makers face unfamiliarchallenges in addressing these broadercontextual issues in populationhealth.• She may have waked and listened to the breathing beside her, and been shaken by unfamiliaremotions and tenderresolves.• She needs your support even more now that she's in an unfamiliarenvironment.• I simply notice, one day after clamming, an irritatingdeposit of grit beneath ten unfamiliargrowths on my hands.• an unfamiliar name• It took Steven some time to get used to his unfamiliarsurroundings.• The army uses satellites to help soldiersnavigateunfamiliarterrain.• The song is in Russian, a language unfamiliar to many singers.• I saw saxifrages and wildthyme and others that were unfamiliar to me.• Some of the waders were unfamiliar to me.• His name may be unfamiliar to Westernaudiences.• Some of these expressions may be unfamiliar to your students.• She noticed an unfamiliartruckparked across the street.• They are unfamiliar with its routine.unfamiliar to• Everything in the house seemed unfamiliar to him.