hāi

oh alas

hey!; hi! (loanword); a high (natural or drug-induced) (loanword)

mouth (口) + sea sound (海) = hey, hi!

海 gives the sound hāi; the mouth radical anchors this as a spoken utterance. The character was coined to transcribe foreign greetings like 'hi' and 'hey.'

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MouthSemantic
SeaPhonetic

,你今天看起来很累。

hāi, nǐ jīn tiān kàn qǐ lái hěn lèi。

Hey, you look really tired today.

她一看到老朋友就大声喊了一声

tā yī kàn dào lǎo péng yǒu jiù dà shēng hǎn le yī shēng hāi。

As soon as she saw her old friend, she called out a loud hi.

Words with 嗨

自嗨

zì hāi

(slang) to have fun by oneself

嗨药

hāi yào

(slang) to take drugs

More characters with 口