Antonyms of noun unfamiliarity

1 sense of unfamiliarity

Sense 1
unfamiliarity, strangeness -- (unusualness as a consequence of not being well known)
       Antonym of familiarity (Sense 2)
      => familiarity -- (usualness by virtue of being familiar or well known)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun unfamiliarity

1 sense of unfamiliarity

Sense 1
unfamiliarity, strangeness -- (unusualness as a consequence of not being well known)
       => unusualness -- (uncommonness by virtue of being unusual)

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