出典:Wiktionary
出典:『Wiktionary』 (2026/06/09 09:14 UTC 版)
From Latin rōborāre (“to strengthen, to invigorate”) + -ive (“forming adjectives”) directly and via French roboratif, from rōbur (“reddish oak; hardness, strength”) + -āre (“forming verbs”). Equivalent to roborate + -ive.
roborative (comparative more roborative, superlative most roborative)
roborative (plural roboratives)