noun or verb acting predominately

  1. grave, serious, alarming.

Variations

Pronunciation Kanji Kana Is Common
 
 
由々しき ゆゆしき
 
 
由由しき ゆゆしき

Contained Kanji Breakdown

wherefore, a reason
ユウ ユ ユイ (3rd, N3)
day, sun, Japan
ひ にっ ニチ (1st, N5)
number one, line, rod radical (no. 2)
コン シ ジョ
repeated kanji symbol