HSK7-9
hēi
hey
Phonosemantic compound. 口 represents the meaning and 黑 represents the sound.
口 Meaning component
kǒu
mouth
黑 Sound component
black
嘿
be silent, be quiet; hey
嘿嘿
(onom.) he he
Make Me a Hanzi
Unicode
Dong Chinese
CC-CEDICT
SUBTLEX-CH
MTSU Chinese text computing