feminine noun + indeclinable particle (nominative or other oblique case)
Analysis. bhikkhunī + api: 'nun' + 'even, also'; the enclitic api marks inclusion or emphasis, here stressing that even nuns (are included in the teaching or practice).
Etymology. bhikkhunī is the feminine of bhikkhu (< bhikku-, derived from bhikṣ- 'to beg'; Sanskrit bhikṣu, related to Latin fīcus, itself possibly connected to the root bheik- 'to break apart', as in one reduced to asking). The suffix -nī marks the feminine agent noun. api is an ancient enclitic meaning 'also, even, too'; cognate with Latin -que, Sanskrit -api, and perhaps Greek apo- in its emphatic sense.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
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