Fùmǔ de yánxíng jǔzhǐ, zǐnǚ ěrrúmùrǎn, yǐngxiǎng shēnyuǎn.
Children absorb their parents' words and conduct day by day — the influence is far-reaching.
Tips
history
From Han Yu's Tang-dynasty 《清河郡公房公墓碣铭》: 目濡耳染,不学以能 — 'shaped by what one sees and hears, able without formal study.' The word order was later swapped to 耳濡目染.
usage
Describes unconscious, gradual influence from environment or upbringing — usually not a deliberate teaching process. Can be positive or negative depending on context.