noun which may take the genitive case particle 'no'
unpopular (with the opposite sex); undatable
Internet slang for someone who is not romantically popular or attractive; often used self-deprecatingly or to describe a lack of dating success.
See also: モテる
He thinks of himself as undatable.
More people are seeking advice online about their unpopularity with the opposite sex.
Formed from the prefix 非 (non-) and モテ, the stem of モテる (to be popular with the opposite sex). The katakana spelling モテ is typical of slang derived from colloquial verbs.