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
彼は自分を非モテだと思っている。
He thinks of himself as undatable.
非モテの悩みをネットで相談する人が増えている。
More people are seeking advice online about their unpopularity with the opposite sex.