honorary

from The American Heritage® Dictionary of the English Language, 5th Edition.

• adjective Held or given as a mark of honor, especially conferred as an honor without the usual adjuncts.
• adjective Holding an office or title given as an honor, without payment.
• adjective Voluntary.
• adjective Relying on honor and not legally enforceable, as a duty or obligation.

from The Century Dictionary.

• Done or made in token of honor; honoring.
• Conferring honor, or intended merely to confer honor, without customary requirements or obligations: as, an honorary degree or title.
• Holding a title or place conferred as an honor.
• Synonyms and Honorary, Honorable. Honorary refers to that which exists or is done for the sake of conferring honor: as, an honorary degree, honorary membership; honorable, to that which is worthy of honor, confers honor, or is consistent with the sentiment of honor: as, an honorable man (in two senses); an honorable alliance; an honorable motive.
• noun Same as honorarium.

from the GNU version of the Collaborative International Dictionary of English.

• adjective Done as a sign or evidence of honor.
• adjective Conferring honor, or intended merely to confer honor without emolument.
• adjective Holding a title or place without rendering service or receiving reward.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective Given as an honor/honour, with no duties attached, and without payment.
• adjective Voluntary.
• adjective Describes the holder of a position or title that is assigned to him as a special honor rather than by normal channels.
• noun An honorarium; a fee for services of no fixed value.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• adjective given as an honor without the normal duties