1. increase growth (cp.; Cpd. 251 sq.) SN.iv.250 (ariya˚); Ja.ii.426 (= phāti); Mil.109 (guṇa˚); Dhs-a.327; Dhp-a.iii.335 (avaḍḍhi = parihāni).
2. welfare, good fortune, happiness Ja.v.101; Ja.vi.330.
3. (as t. t.) profit, interest (on money, esp. loans) Thig.444 (= iṇa-vaḍḍhi Thag-a.271) DN-a.i.212, DN-a.i.270; Vb-a.256 (in simile); Snp-a.179 (˚gahaṇa).

fr. vṛdh, Vedic vṛddhi refreshment etc., which is differentiated in Pāli into vuddhi & vaḍḍhi