cond 3rd sg of abhavissa (verb); cond 2nd sg of abhavissa (verb)
Analysis. a- (not) + bhavissa (conditional of bhavati, to be): 'would not be'. The a- prefix negates the conditional stem, creating a counterfactual sense used in conditional clauses and apodoses.
Etymology. a- (negation prefix, cognate with English un-, Greek a(n)-) + bhavati (to be, become, cognate with Sanskrit bhavati and Indo-European *bʰeuH- 'to grow, become', whence English be). The conditional -issa marks irreality or hypothetical mood.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
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