谙

不谙世故

bù ān shì gù

unworldly

不谙水性

bù ān shuǐ xìng

to not know how to swim; to not be a strong swimmer

深谙

shēn ān

to know (sth) very well

熟谙

shú ān

to know sth fluently

谙事

ān shì

(often used in the negative in describing a young person) to have an understanding of things

谙熟

ān shú

to be proficient in

谙练

ān liàn

conversant