1st person plural present indicative (with iti quotation marker)
Analysis. gacchāma (1st plural present stem of gacchati) + iti (quotation particle "thus, saying") — "we go" (quoted or reported). The iti marks the preceding word as direct speech or a formula being cited.
Etymology. √gam (Sanskrit gacchati, Latin venio "comes" from *gwem-, Greek βαίνω bainō "goes"; cognates in English "come" and German "kommen"). The root conveys motion toward a place or state. Sanskrit and Pali use the same Indo-European root *gwem- seen across European languages.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
Lite mode — plain HTML for e-readers and old browsers. Full version