瞎
xiā · HSK 7
blind
🦯 瞎 = 目 (eye) + 害 (harm): a harmed eye is a blind eye
The left side 目 is the eye radical; the right side 害 means harm or injury. An eye that has been harmed cannot see, hence blind. By extension xiā also means acting blindly: groundlessly, foolishly, to no purpose.
瞎 — eye radical 目 + 害 (harm) phonetic
瞎 is a semantic-phonetic compound. The eye radical 目 gives the meaning 'related to vision,' while 害 (hài, 'harm') supplies the sound, shifted to xiā. Together they convey 'damaged eye,' i.e. 'blind,' and by extension 'blindly' or 'recklessly.'