Synonyms of dispensable

2 Syllables
deadwood, trivial, needless, minor
3 Syllables
causeless, unneeded, superfluent, superfluous, useless
4 Syllables
expendable, excessive, residuary, unrequired, unimportant, inessential, nonessential, unessential, removable, disposable
5 Syllables
unnecessary
7 Syllables
supererogatory