masc nom sg of anuttara (adj)
Etymology. an- (prefix 'not') + uttara (comparative 'higher'), literally 'not higher'; the negation of the comparative forms the superlative sense. Cognate with English utter (from Old English utera, comparative of ut 'out'), which preserves the same comparative structure.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
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