ya
particle used to express surprise or mild emphasis
Phonosemantic compound. 口 represents the meaning and 牙 represents the sound.
Evolution

Seal script
Shuowen (~100 AD)Regular script
ModernDefinitions
Most common words with 呀
Freq. | Word | Meaning |
---|---|---|
(particle equivalent to 啊 after a vowel, expressing surprise or doubt) | ||
interjection of wonder, shock or admiration | ||
Oh my! | ||
Heavens! |
Sources