3rd person singular present indicative (with quotative particle iti appended)
Analysis. ārabhatha + iti: ārabhatha is 2nd person singular imperative/optative of ārabhati; iti is the quotative particle 'thus, so'. The form represents quoted speech: 'begins!' or 'let (one) begin!'
Etymology. ā- (toward, up) + √rabh (to seize, grasp, take hold of), giving the sense 'takes up, grasps at, undertakes'. √rabh is cognate with Sanskrit rabhnāti 'grasps' and the Indo-European root *grebh- underlying English grab and grasp (originally 'to seize').
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
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