Noun
festival; feast; matsuri
see お祭り
その祭りはつまらないどころではありませんでした。The festival was far from dull. harassment by an Internet pitchfork mob; online shaming; flaming
Colloquial
Noun, used as a suffix
galore (as in "goals galore"); frenzy; mania
Colloquial
Also written 祭【まつり】