凱 Origin — Chinese Character Wiki

kǎi

victorious

Phonosemantic compound. 豈 represents the meaning and 几 represents the sound.

Components

qǐ victorious music, happy

几 Sound component

jǐ, jī small table

Change in sound

凱 and 几 don't sound similar in modern Mandarin due to historical phonetic changes. They were more similar in Old Chinese.
凱 *C.qʰˤəjʔ
几 *C.kr[ə]jʔ

Regular Modern

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	Middle Chinese	Old Chinese	Gloss
Baxter-Sagart	khojX	C.qʰˤəjʔ	pleasant

Phonosemantic compound. 岂 represents the meaning and 几 represents the sound. Simplified form of 凱.

qǐ victorious music, happy

几 Sound component

jǐ, jī small table

Change in sound

凯 and 几 don't sound similar in modern Mandarin due to historical phonetic changes. They were more similar in Old Chinese.
凯 *C.qʰˤəjʔ
几 *C.kr[ə]jʔ