Lewis & Short

dē-nūbo, psi, ptum, 3, v. n., to marry off (sc. from the paternal home; cf. deduco), to marry (rare; perhaps not ante-Aug.).

  1. I. Prop.: nec Caenis in ullos Denupsit thalamos, Ov. M. 12, 196; Ap. M. 9, p. 231, 29; 5, p. 166, 6: Claro fratri denupta, id. Mag. p. 319, 6.
    1. B. Esp., To demean one’s self by marriage, to marry beneath one’s rank: Julia denupsit in domum Rubellii Blandi, Tac. A. 6, 27 (33).
  2. II. Transf.: plantis, Col. poët. 10, 158.
      1. 2. Obscene, of a mock marriage, Tac. A. 15, 37; Suet. Ner. 29.