さい
こう

takes genitive case の, adjectival noun or quasi-adjective, noun

Slang.
  1. super happy, wonderful, delightful, awesome.

Variations

Pronunciation Kanji Kana Is Common
さい
こう
最幸 さいこう

Contained Kanji Breakdown

utmost, most, extreme
サイ もっと.も も (4th, N3)
day, sun, Japan
ひ にっ ニチ (1st, N5)
take, fetch, take up
と.る シュ とり (3rd, N3)
ear
みみ ジ がみ (1st, N3)
or again, furthermore, on the other hand
また ユウ やす (8th, N1)
happiness, blessing, fortune
しあわ.せ コウ さいわ.い (3rd, N3)
soil, earth, ground
ド つち は (1st, N5)
sheep(羊) variant
to divide
dry, parch, ebb
ひ.る カン ほ.す (6th, N2)