Sub‐vene″ (?), v. i. [imp. & p. p.Subvened (?); p. pr. & vb. n.Subvening.] [Pref. sub- + L. venire to come. See Subvention.] To come under, as a support or stay; to happen.
A future state must needs subvene to prevent the whole edifice from falling into ruin. Bp. Warburton.