3rd person singular present indicative (or possibly a scribal variant/contraction)
Analysis. paṭi- (back, in return) + anu- (along, following) + bhoti (becomes, experiences) — the prefix combination paṭi + anu yields the sense of mutual or retaliatory experiencing.
Etymology. From paṭi (back, counter) and anu (along, following) prefixed to √bhū (to be, become, experience). The root √bhū is cognate with English 'be' and Greek 'phúein' (to grow, come to be). The prefix pairing suggests a reciprocal or retaliatory quality of becoming or experiencing.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
Lite mode — plain HTML for e-readers and old browsers. Full version