きのう
昨日
　
の
とも
友
　
は
きょう
今日
　
の
てき
敵

expression

Proverb.
  1. a friend today may turn against you tomorrow.

Variations

Pronunciation Kanji Kana Is Common
きのう
昨日
　
の
とも
友
　
は
きょう
今日
　
の
てき
敵
 昨日の友は今日の敵 きのうのともはきょうのてき

Contained Kanji Breakdown

yesterday, previous
サク (4th, N3)
day, sun, Japan
ひ　にっ　ニチ (1st, N5)
though, notwithstanding, while
サ　サク　-なが.ら (Kentei Pre-1)
day, sun, Japan
ひ　にっ　ニチ (1st, N5)
friend
とも　ユウ　う (2nd, N5)
left hand, cliff(厂) variant
or again, furthermore, on the other hand
また　ユウ　やす (8th, N1)
now
いま　コン　キン (2nd, N5)
to assemble. to gather together
シュウ　あつまる
person
ひと　ニン　ジン (1st, N5)
one, one radical (no.1)
イチ　いっ　ひと- (1st, N5)
fu
enemy, foe, opponent
テキ　かたき　あだ (5th, N1)
the stalk, the stem, the foot
テキ　チャク　セキ
stand up, rise, set up
た.つ　リツ　たつ (1st, N4)
kettle lid radical (no. 8)
トウ (Kentei 1)
grass, straw, herbs
to divide
one, one radical (no.1)
イチ　いっ　ひと- (1st, N5)
upside-down box radical (no. 13)
キョウ　ケイ (Kentei 1)
old
コ　ふる.い　ふゆ (2nd, N4)
ten
ジュウ　ジッ　ジュッ (1st, N5)
mouth
くち　コウ　ク (1st, N4)
strike, hit, folding chair radical variant (no. 66)
ホク (Kentei 1)
person(人) variant
mow, cut grass, subdue
ガイ　ゲ　おさ.める (Kentei 1)