indeclinable particle
Analysis. The word is an exclamatory particle without internal structure; the form iṅgha appears to be an onomatopoetic or expressively altered stem, possibly related to the root √gam (go) with the iterative/intensive reduplication or lengthening pattern found in commands and appeals.
Etymology. Likely an expressive particle derived from or influenced by √gam (go, come), but the precise morphological path is obscured by the fossilization of the form as an interjection. The -gha ending is characteristic of Pali imperatives and energetic particles (cf. gaccha "go!"), but iṅgha as a whole functions as a frozen exclamation rather than a transparent compound. No clear cognates in related languages.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
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