zǒu​sàn

to lose contact

走散 zǒu//sàn
to lose contact verb
To lose contact with a companion while walking or traveling in a crowd

They got separated in the crowded theater.

to disperse
To go separate ways; to scatter or disperse (of a crowd)

Frequency

Movie subtitles
1.01 per million appears in 1% of films
Written text
0.639 per million

Sources