legalize

v

1. legitimize, legitimatize, codify, conform to the law, make acceptable; constitute, institute, formalize, establish, set up; enact, ordain, legislate, pass as law, enter into the books; confirm, ratify, bind.

2. authorize, warrant, license, certify, accredit, validate; invest, empower, enable, entitle, commission, depute; permit, allow, consent or subscribe to, agree to, vouchsafe; sanction, approve, give one's nod of approval, countenance, accept, Inf.O.K., Chiefly U.S. approbate.