Unfamiliar things are unknown or unexplored. On your first day at a new school, every single face you see is unfamiliar.

Traveling in an unfamiliar city is easier with a map or a GPS, and meeting the unfamiliar people who live there is easier if you speak at least a few words of their language. Some people love eating unfamiliar food — things they've never tasted before — while others aren't fond of it. When something (or someone) is familiar, it's known to you — the word shares a Latin root with family. Add the "not" prefix un-, and you've got unfamiliar.

Definitions of unfamiliar

adj not known or well known

“a name unfamiliar to most”
“be alert at night especially in unfamiliar surroundings”
strange, unknown
not known before
unacquainted, unacquainted with, unfamiliar with
having little or no knowledge of
foreign, strange
relating to or originating in or characteristic of another place or part of the world
not known
well known or easily recognized
having fair knowledge of
much trodden and worn smooth or bare
long-familiar, well-known
frequently experienced; known closely or intimately
(used for emphasis) very familiar
apprehended with certainty
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