The Collaborative International Dictionary of English v.0.48:
Imputative \Im*put"a*tive\, a. [L. imputativus: cf. F. imputatif.] Transferred by imputation; that may be imputed. -- Im*put"a*tive*ly, adv. [1913 Webster] Actual righteousness as well as imputative. --Bp. Warburton. [1913 Webster]