noun, noun which may take the genitive case particle 'no'
Slang abbreviation of お気に入り. Used as a noun or no-adjective to refer to a favorite person, thing, or pet. Common in casual speech and online communication.
See also: お気に入り
この曲、最近のお気にだよ。
This song is my recent favorite.
うちの猫は家族みんなのお気にだ。
Our cat is the whole family's pet.
Abbreviation of お気に入り (okiniiri), dropping the final 入り (iri).