pronoun (3rd person plural nominative) + particle
Analysis. te (3rd person plural nominative pronoun) + api (particle meaning 'also, even'); final -e drops before initial -a- of api in sandhi, and the p assimilates to the following vowel or remains.
Etymology. te is the 3rd person plural of the demonstrative ta- (that, those), cognate with Sanskrit tá- and Proto-Indo-European *to- (seen in English 'the', Latin 'iste', Greek 'to'); api is an enclitic particle from PIE *apo- (away, off), originally 'then, afterwards', here marking emphasis or inclusion of another item in a series.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
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