くん
君
し
子
　
は
ひょう
豹
へん
変
　
す

expression, す verb - precursor to the modern する

Proverb.
  1. a wise man changes his mind, a fool never, the wise adapt themselves to changed circumstances.
  2. the wise make no scruple in suddenly changing their demeanor. Colloquialism.

Variations

Pronunciation Kanji Kana Is Common
くん
君
し
子
　
は
ひょう
豹
へん
変
　
す
 君子は豹変す くんしはひょうへんす

Contained Kanji Breakdown

mister, you, ruler
きみ　クン　み (3rd, N3)
an official rank
イン　おさ　ただ.す (Kentei 1)
snout, hand
katakana no radical (no. 4)
ヘツ　えい　よう (Kentei 1)
mouth
くち　コウ　ク (1st, N4)
child, sign of the rat, 11PM-1AM
こ　シ　ス (1st, N5)
complete, finish
リョウ　さとる (8th, N2)
one, one radical (no.1)
イチ　いっ　ひと- (1st, N5)
leopard, panther
ヒョウ　ホウ (Kentei Pre-1)
snake, legless insect, badger or clawed dog radical (no. 153)
タイ　チ (Kentei 1)
ladle, one tenth of a go, dip
シャク (N1)
wrapping enclosure, wrapping radical (no. 20)
ホウ　つつ.む (Kentei 1)
dot, tick or dot radical (no. 3)
チュ (Kentei 1)
unusual, change, strange
ヘン　か.わる (4th, N3)
also, again
また　エキ　ヤク (Kentei Pre-1, N1)
kettle lid radical (no. 8)
トウ (Kentei 1)
fire, fire radical (no. 86)
ヒョウ　カ
late, delayed, winter radical (no. 34)
チ　しゅう (Kentei 1)