Sādhukaṃ (adverb) [from sādhu] well, thoroughly Vin I 46; II 208; D I 62. — instrumental sādhukena (as adverb) willingly (opposite with force) Pv II 9 2 .
(ind, ind, adv, from sādhu) well; carefully; thoroughly; fully; completely well, thoroughly Construction: √sādh + u + ka + aṃ