Origin: Latin suffix -ous
Superfluous has 3 different meanings across 1 category:
serving no useful purpose; having no excuse for being
"otiose lines in a play"
"advice is wasted words"
"a pointless remark"
"a life essentially purposeless"
"senseless violence"
more than is needed, desired, or required
"trying to lose excess weight"
"found some extra change lying on the dresser"
"yet another book on heraldry might be thought redundant"
"skills made redundant by technological advance"
"sleeping in the spare room"
"supernumerary ornamentation"
"it was supererogatory of her to gloat"
"delete superfluous (or unnecessary) words"
"extra ribs as well as other supernumerary internal parts"
"surplus cheese distributed to the needy"
In excess of what is required or sufficient.