ratify

Từ điển American Heritage Dictionary 4th

rat·i·fy (rătʹə-fī')tr.v. rat·i·fied, rat·i·fy·ing, rat·i·fies
To approve and give formal sanction to; confirm. See Synonyms at approve. [Middle English ratifien, from Old French ratifier, from Medieval Latin ratificāre: Latin ratus, fixed, past participle of rērī, to reckon, consider; see rate¹ + Latin -ficāre, -fy.] rat'i·fi·caʹtion (-fĭ-kāʹshən) n.ratʹi·fi'er n.