1) Accept as valid 2) Authorise 3) Authorize 4) Clear 5) Pass 6) To approve officially 
• (a.) Approved. • (v. t.) To express approbation of; to approve; to sanction officially.
Ap'pro·bate adjective [ Latin approbatus , past participle of approbare to approve.] Approved. [ Obsolete] Elyot. 
[v] - approve or sanction officially 2. [v] - accept as valid, as of documents
approbate To approve officially.
verb accept (documents) as valid
to approve officially.