unnecessarily
WordReference English Thesaurus © 2025
Synonyms:
needlessly, causelessly, without occasion, carelessly, fortuitously, casually, haphazardly, wantonly, unessentially, redundantly, inexpediently, uselessly, exorbitantly, superfluously, objectionably, disadvantageously, optionally, avoidably, without cause, without reason, gratuitously, foolishly, excessively, unkindly, unjustifiably
Antonyms:
necessarily, indispensably, unavoidably, crucially, vitally, fundamentally, inevitably, urgently, as a matter of course, without fail