neuter singular nominative/accusative of a derived adjective (gerundive)
Analysis. sam- (together) + modanīya (gladness-worthy, from modati 'rejoices'), conveying that which gathers or produces gladness; used of wholesome deeds, virtuous conduct, and joyful occasions in the canon.
Etymology. √mud 'to rejoice' (cognate with Sanskrit mud-, ultimately Indo-European *meud- 'to push away, press'). The prefix sam- (together, completely; cognate with English 'same', Latin con-) intensifies and unifies: sammodanīya describes something that collects joy or brings people together in celebration. Modati itself carries the image of the heart springing or pressing outward in joy.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
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