au·tho·rize
Function: transitive verb
Inflected Form(s): -rized; -riz·ing
1 : to establish by or as if by authority : SANCTION <a custom authorized by time>
2 : to invest especially with legal authority : EMPOWER <authorized to act for her husband>
3 archaic : JUSTIFY 1a
- au·tho·riz·er noun

certified
Function: adjective
1 : having earned certification <a certified gemologist>
2 : GENUINE, AUTHENTIC <a certified big shot> <certified intellectuals>