liǎo​rú​zhǐ​zhǎng

to know something like the back of one's hand

了如指掌 瞭如指掌 liǎo​rú​zhǐ​zhǎng
to know something like the back of one's hand adjective
to understand something very clearly, as if pointing to things in one's own palm; to know something inside out

Frequency

Movie subtitles
4.41 per million appears in 2% of films
Written text
1.66 per million

Cross-References

Variant of

Synonym

Sources