Suppletive \Sup"ple*tive\, Suppletory \Sup"ple*to*ry\, a. [Cf. F. suppl['e]tif, LL. suppletivus, from L. supplere, suppletum, to fill up. See {Supply}.] Supplying deficiencies; supplementary; as, a suppletory oath. Suppletory \Sup"ple*to*ry\, n.; pl. {Suppletories}. That which is to supply what is wanted. Invent suppletories to excuse an evil man. --Jer. Taylor.