adjectival nouns or quasi-adjectives (keiyodoshi), nouns which may take the genitive case particle 'no', usually written using kana
1. sudden; abrupt; unexpected; immediate; hasty; improvised; impromptu; offhandnoun (common) (futsuumeishi), abbreviation
2. impromptu skitnoun (common) (futsuumeishi), abbreviation, slang, usually written using kana
3. bandwagon fan; fair-weather fan