だいTop 2000MeaningsParticle1. is it?; isn't it? (Familiar, marks wh-question (what, where, who))2. be; is (Children's language, strengthens one's judgment or conclusion)Pitch accentだいだいExamples1その仕し事ごとに応おう募ぼしたらどうだい。Why not apply for that job?