as needed 9 Associations

as required pro re nata PRN

as required 11 Associations

as needed pro re nata PRN

dispensable 11 Associations

unnecessary (related term) unneeded (related term) indispensable (antonym)

gratuitous 10 Associations

needless uncalled-for unnecessary (similar term) unneeded (similar term)

inessential 11 Associations

unnecessary (similar term) unneeded (similar term)

necessary 9 Associations

essential (similar term) indispensable (similar term) incumbent (similar term) needed (similar term) needful (similar term) required (similar term) requisite (similar term)

needed 6 Associations

needful required requisite necessary (similar term)

needful 7 Associations

needed required requisite necessary (similar term)

needless 8 Associations

gratuitous uncalled-for unnecessary (similar term) unneeded (similar term)

prn 3 Associations

as needed as required pro re nata PRN

pro re nata 11 Associations

as needed as required PRN

required 8 Associations

needed needful requisite necessary (similar term)

requisite 9 Associations

needed needful required necessary (similar term)

spare 5 Associations

unnecessary (similar term) unneeded (similar term)

uncalled-for 12 Associations

gratuitous needless unnecessary (similar term) unneeded (similar term)

unnecessary 11 Associations

unneeded excess (similar term) extra (similar term) redundant (similar term) spare (similar term) supererogatory (similar term) superfluous (similar term)

unneeded 8 Associations

unnecessary excess (similar term) extra (similar term) redundant (similar term) spare (similar term) supererogatory (similar term) superfluous (similar term)