Lewis & Short

quīcumque (or -cunque), quaecumque, quodcumque (also separately: cum quibus erat cumque una, Ter. And. 1, 1, 36; quam se cumque in partem, Cic. de Or. 3, 16, 59.
Old form of the plur. quescumque, Cato ap. Charis. p. 70 P., and ap. Prisc. p. 960 P.), pron. rel.

  1. I. Whoever, whatever, whosoever, whatsoever, every one who, every thing that, all that (class.): quicumque is est, ei me, etc., whosoever, Cic. Fam. 10, 31, 8: quoscumque de te queri audivi, quācumque potui ratione placavi, whomsoever I have heard complaining, them I have satisfied in every possible way, id. Q. Fr. 1, 2, 2, § 4: petere fortunam, quaecumque accidat, what fortune soever, Caes. B. G. 1, 31: ut quodcumque vellet, liceret facere, Nep. Dat. 10, 1.
    Rarely with subj. in orat. rect.: quocumque haec modo se habeant, Plin. 27, 12, 91, § 114.
      1. 2. Absol. (Cic., Cæs., and Sall. always construe quicumque as rel. with its own verb, except in abl. sing.; v. infra; as absol. for quivis or quilibet, freq. in Liv. and post-Aug. writers; cf. Zumpt, Gram. § 706), any whatever, etc.: te audio (libenter) quācumque de re, Cic. Q. Fr. 2, 8 (10), 1: qui quācumque de causā ad eos venerunt, Caes. B. C. 6, 23: quocumque modo, Sall. J. 103, 3: laeti quamcunque condicionem paciscendi acceperunt, Liv. 22, 58, 5: ubicumque et quācumque matre genitus, id. 1, 3, 3: qui de quācumque causā tum aspernati nostra auxilia estis, id. 45, 23, 6: quācumque condicione arma viris auferre, id. 9, 9, 11: quocumque gladiatorio munere prolapsi, Suet. Claud. 34: Ciceronem cuicunque eorum opponere, Quint. 10, 1, 105.
        In neutr. subst., with gen., whatever, however much: quodcumque est lucri, i. e. all the profit, Phaedr. 5, 6, 3: quodcumque militum contrahere poteritis, as many troops as ever you can bring together, Pompon. ap. Cic. Att. 8, 12, A, 4: quodcunque hoc regni, all this authority, Verg. A. 1, 78.
        When the rel. occurs twice or oftener in the same connection, only qui is repeated: quaecunque navis ex Asiā, quae ex Syriā, quae, etc., Cic. Verr. 2, 5, 56, § 145: hoc quodcumque vides, Prop. 4, 1, 1.
    1. B. In partic., for qualiscumque, howsoever constituted, of whatever kind: quaecumque mens illa fuit, Gabinii fuit, Cic. Rab. Post. 8, 21.
  2. II. Transf., each or every possible, each, every, all: quae sanari poterunt, quācumque ratione sanabo, in every possible way, Cic. Cat. 2, 5, 11: et quocumque modo maluit esse mea, under all circumstances, Prop. 1, 8, 34 (1, 8, b, 8): de quācumque causā, Liv. 45, 23.