Rat"i*fy (-fī), v. t. [imp. & p. p. Ratified (-fīd); p. pr. & vb. n. Ratifying (- fī`&ibreve;ng).] [F. ratifier, fr. L. ratus fixed by calculation, firm, valid + -ficare (in comp.) to make. See Rate, n., and -fy.] To approve and sanction; to make valid; to confirm; to establish; to settle; especially, to give sanction to, as something done by an agent or servant; as, to ratify an agreement, treaty, or contract; to ratify a nomination.

It is impossible for the divine power to set a seal to a lie by ratifying an imposture with such a miracle.

• Give formal consent to; make officially valid.