genitive plural of sammappadhāna (masculine noun in -a); sammappadhānānaṁ shows external sandhi (final -ā of genitive plural + initial ṁ of enclitic)
Analysis. sammappadhāna is a compound: samma (right, correct; adverb from sam + ā) + padhāna (effort, exertion). The word embodies the cardinal Buddhist principle that ethical and mental development requires sustained, directed effort along the Noble Eightfold Path.
Etymology. sammappadhāna combines sam (together, with) + ppa (assimilated pad, from prati: back, against, counter) + dhāna (placing, putting; √dhā). The prefix sam- emphasizes unified, collected effort; ppa- suggests the counter-effort against mental defilement; dhāna conveys 'putting in place' or 'placing effort'. The root √dhā (to put, place) is cognate with Greek τίθημι (tithēmi) and English do.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
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