Save Type Surname Usage Thai Scripts ฤทธิ์ธาอภินันท์(Thai) Pronounced Pron. /rit̚˦˥.tʰaː.ʔa˨˩.pʰiʔ˦˥.nan/ [key·simplify] Meaning & History From Thai ฤทธิ์ (rit) meaning "power", ธา (tha), a transcription of Sanskrit धा (dhā) meaning "bearer, maintainer", อภิ (api) of unknown meaning, and นันท์ (nan) of unknown meaning.