[1] : The Collaborative International Dictionary of English v.0.48

supererogatory \su`pererog"atory\, a.
   performed to an extent not enjoined, or not required, by duty
   or necessity; as, supererogatory services. --howell.
   1913 webster

[2] : WordNet (r) 2.0

supererogatory
     adj : 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" syn: excess, extra, redundant, spare, superfluous,
            supernumerary, surplus
see also:
excess extra redundant spare superfluous supernumerary 
surplus 

[3] : Moby Thesaurus II by Grady Ward, 1.0

25 moby thesaurus words for "supererogatory":
   de trop, dispensable, excess, expendable, expletive, gratuitous,
   in excess, needless, nonessential, pleonastic, prolix, redundant,
   spare, superfluous, supernumerary, tautologic, tautologous,
   to spare, unasked, uncalled-for, unessential, unnecessary,
   unneeded, verbose, wanton

Supererogatory >> S Words
Supererogatory, definition of term: Supererogatory
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