知根知底 (zhī) — to know someone thoroughly / to be very familiar with someone's background
Definition
An idiom meaning you know someone thoroughly — their background, character, and history. Implies a long-standing, intimate familiarity, stronger than simply 认识.
idiom
to know someone thoroughly / to be very familiar with someone's background
Examples
- ，知根知底。Wǒ men shì lǎo péng you le, hù xiāng zhī.We're old friends; we know each other inside out.
- ，知根知底。Tā zài zhè jiā gōng sī gān le èr shí nián, duì měi gè yuán gōng dōu zhī.He's worked at this company for twenty years and knows every employee thoroughly.
- ，知根知底，。Bié zài tā miàn qián sā huǎng, tā zhī, nǐ piàn bù liǎo tā.Don't lie in front of him — he knows you too well, you can't fool him.
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