authorise

from WordNet (r) 3.0 (2006)

authorise
    v 1: give or delegate power or authority to; "She authorized her
         assistant to sign the papers" [syn: {empower}, {authorise},
         {authorize}]
    2: grant authorization or clearance for; "Clear the manuscript
       for publication"; "The rock star never authorized this
       slanderous biography" [syn: {authorize}, {authorise}, {pass},
       {clear}]

from The Collaborative International Dictionary of English v.0.48

authorise \authorise\ v.
   1. grant authorization or clearance for. Same as {authorize}.

   Syn: authorize, pass, clear, permit officially.
        [WordNet 1.5]