adjectival noun or quasi-adjective, noun

  1. great, immense.

Variations

Pronunciation Kanji Kana Is Common
洪大 こうだい

Contained Kanji Breakdown

deluge, flood, vast
コウ ほん (9th, N1)
water, water radical (no. 85)
さんずい
together, both, neither
とも キョウ (4th, N3)
twenty(廿) variant
eight, eight radical (no. 12)
ハチ や はっ (1st, N5)
large, big
ダイ おお- た (1st, N5)
one, one radical (no.1)
イチ いっ ひと- (1st, N5)
person
ひと ニン ジン (1st, N5)