justifiable

capable of being defended with good reasoning against verbal attack had justifiable reasons for leaving early Synonyms defendable, defensible, tenable, maintainable, supportable, sustainableRelated Words rational, reasonable, sensible, well-grounded; acceptable, admissible, allowable, exceptionable, legitimate, passable, unobjectionable, viable, warrantable; confirmable, provable, verifiable; explainable, explicableNear Antonyms absurd, illogical, irrational, ridiculous, unsound; extreme, outrageous, unreasonable; groundless, objectionable, unacceptable, unfounded; inexplicable, unexplainableAntonyms indefensible, insupportable, unjustifiable, unsustainable, untenable