masc nom pl of sammaggata (adj); fem nom sg of sammaggata (adj); fem nom pl of sammaggata (adj); nt nom pl of sammaggata (adj); …
Analysis. saṁ + magga + ta: 'together-gone' (saṁ = together, completely; magga = path, way; ta = past participle ending). The compound emphasizes the unified, complete traversal of the Noble Path leading to awakening.
Etymology. saṁ (sam-) is the Indo-European root meaning 'together, with, same' (cognates: English 'same', Latin similis, Greek homo-), here intensifying magga 'path' (from √gam 'to go', related to Latin venire and English 'come'). The sense evolved from literal 'together-gone' (traveling the path in its entirety) to 'one who has gone the right way', hence 'perfected, awakened'.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
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