3rd singular present indicative
Analysis. maññasi-iti: maññasi (3rd sg. opt.) + iti (quotative particle) = 'if he should think' or 'thinking that'; this is a frozen or formulaic combination used in doctrinal contexts to introduce conditional or reported thought.
Etymology. √man 'think, mind' (Sanskrit man-, Greek menos 'spirit, mind', Latin mens 'mind', English mind). The root is ancient Indo-European *men- 'to think, intend'. In Pali doctrine, maññanā (thinking wrongly) typifies ego-clinging; sammāmaññanā (right thinking) marks discernment.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
Lite mode — plain HTML for e-readers and old browsers. Full version