1. (v. t.) To clothe with authority, warrant, or legal power; to give a right to act; to empower; as, to authorize commissioners to settle a boundary.

2. (v. t.) To make legal; to give legal sanction to; to legalize; as, to authorize a marriage.

3. (v. t.) To establish by authority, as by usage or public opinion; to sanction; as, idioms authorized by usage.

4. (v. t.) To sanction or confirm by the authority of some one; to warrant; as, to authorize a report.

5. (v. t.) To justify; to furnish a ground for.

OK accept accredit affirm allow amen appoint approve arm assign authenticate autograph certificate certify charge charter clothe clothe with power commission commit confirm consent to consign constitute cosign countenance countersign declare lawful decree delegate demand depute deputize detach detail devolute devolve devolve upon dictate empower enable enact endorse endow endue enfranchise entitle entrust establish formulate franchise give in charge give leave give official sanction give permission give power give the go-ahead give the imprimatur give thumbs up impose initial invest lay down legalize legislate legitimate legitimatize legitimize license make a regulation make legal make obligatory mission notarize okay ordain pass pass on pass upon patent permit post prescribe privilege put in force ratify regulate require rubber stamp sanction say amen to seal second send out set sign sign and seal subscribe to support swear and affirm swear to transfer undersign underwrite validate visa vise warrant