accredit

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To ascribe or attribute to; credit with.
2. v. To supply with credentials or authority; authorize. See Synonyms at authorize.
3. v. To appoint as an ambassador to a foreign government.
4. v. To attest to and approve as meeting a prescribed standard. See Synonyms at approve.
5. v. To recognize (an institution of learning) as maintaining those standards requisite for its graduates to gain admission to other reputable institutions of higher learning or to achieve credentials for professional practice.
6. v. To believe.

Century Dictionary and Cyclopedia

1. To give credit or credence to; repose confidence in; trust; esteem.
2. To confer credit or authority on; stamp with authority.
3. Hence, specifically To send with credentials, as an envoy.
4. To believe; accept as true.
5. To ascribe or attribute to; invest with the credit of: followed by with.

Wiktionary

1. v. transitive To ascribe; attribute; credit with.
2. v. transitive To put or bring into credit; to invest with credit or authority; to sanction.
3. v. transitive To send with letters credential, as an ambassador, envoy, or diplomatic agent; to authorize, as a messenger or delegate.
4. v. transitive To believe; to put trust in.
5. v. transitive To enter on the credit side of an account book.
6. v. transitive To certify as meeting a predetermined standard; to certify an educational institution as upholding the specified standards necessary for the students to advance.
7. v. transitive To recognize as outstanding.
8. v. transitive, literally To credit.

GNU Webster's 1913

1. v. To put or bring into credit; to invest with credit or authority; to sanction.
2. v. To send with letters credential, as an ambassador, envoy, or diplomatic agent; to authorize, as a messenger or delegate.
3. v. To believe; to credit; to put trust in.
4. v. To credit; to vouch for or consider (some one) as doing something, or (something) as belonging to some one.

WordNet 3.0

1. v. provide or send (envoys or embassadors) with official credentials
2. v. ascribe an achievement to
3. v. grant credentials to