/ ʌnˈnesəsəri; NAmE -seri/ adjective
1.
not needed; more than is needed
SYN unjustified :
unnecessary expense
They were found guilty of causing unnecessary suffering to animals.
All this fuss is totally unnecessary .
OPP necessary
2.
( of remarks, etc. ) not needed in the situation and likely to be offensive
SYN uncalled for :
That last comment was a little unnecessary, wasn't it?
► un·neces·sar·ily / ˌʌnˈnesəsərəli; NAmE ˌʌnˌnesəˈserəli/ adverb :
There's no point worrying him unnecessarily.
unnecessarily complicated instructions