masc dat sg of atta (noun); masc gen sg of atta (noun)
Etymology. From Proto-Indo-European *h₂et-to- 'self' (cognate with Sanskrit ātman- 'self, soul', Latin ipse 'self, himself', and English that via the Old English þæt). The word has no prefix; it is a primitive root noun expressing the reflexive notion of one's own being or essence.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
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