indeclinable (sandhi form dutiyampi = dutiyaṃ + api)
Analysis. dutiyaṃ (accusative of dutiya, 'second') + api ('even, also'), forming an emphatic or iterative phrase: 'a second time again' or 'once more'.
Etymology. dutiya from dvi- (two, dual) + -tiya (ordinal suffix, as in Latin -tius in tertius). The root dvi- is the same Indo-European *dw-o that gives English 'two', Greek dýo, Sanskrit dvi. The ordinal -tiya is cognate with Latin -tius (tertius 'third', secundus from sequor). api is the particle 'also, even', from Indo-European *api-, found in Latin post (earlier *apo) and English after.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
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