Synonyms of unnecessary in English:

unnecessary


See definition of unnecessary

adjective

1‘many people feel that holiday insurance is unnecessary for travel in Britain’

SYNONYMS
unneeded, needless, inessential, non-essential, not required, uncalled for, gratuitous, useless, unmerited, unwarranted, unwanted, undesired, dispensable, avoidable, peripheral, cosmetic, unimportant, trivial, incidental, optional, extraneous, expendable, disposable, redundant, pointless, purposeless, to no purpose, to no avail
wasted, wasteful, wanton
superfluous, excess, excessive, too much, disproportionate, surplus, surplus to requirements
de trop
rare supererogatory
ANTONYMS

necessary, essential, useful