circumstantiate

verb2

1. •
   To describe, verify or prove by setting out circumstantial evidence

   • Neither will time permit to circumstantiate these particulars, which I have only touched in the general. — 1661
2. •
   To place in particular circumstances; to invest with particular accidents or adjuncts.

   • If the act were otherwise circumstantiated, it might will that freely which now it wills reluctantly. — 1655