a reason or argument offered in disagreement, opposition, refusal, or disapproval.

the act of objecting.

a ground or cause for objecting.

a feeling of disapproval, dislike, or disagreement.

noun

acceptance , agreement , concurrence , consent , acquiescence , approval

noun

cavil , censure , challenge , counter-argument , criticism , declination , demur , demurral , demurring , difficulty , disapprobation , disapproval , discontent , disesteem , disinclination , dislike , displeasure , dissatisfaction , doubt , exception , grievance , gripe , hesitation , kick , niggle * , odium , opposition , protest , protestation , question , rejection , reluctance , remonstrance , remonstration , repugnancy , revilement , scruple , shrinking , squawk * , stink * , unwillingness , expostulation , squawk , argument , demurrer , oppose