Definition of 朱に交われば赤くなる (しゅにまじわればあかくなる)
しゅまじあか
                        朱に交われば赤くなる
しゅにまじわればあかくなる
shunimajiwarebaakakunaru
expression
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people are formed by their surroundings, walk with the wise and become wise; associate with fools and get in trouble(proverb)
Related Kanji
| 朱 | vermilion, cinnabar, scarlet, red, bloody | 
| 交 | mingle, mixing, association, coming & going | 
| 赤 | red |