connubial - Definitions from Dictionary.com (etemology):

connubial (kuh-NOO-bee-ul; -NYOO-) adjective

Relating to marriage or the married state; conjugal.

Source: The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2000 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.

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adj : of or relating to marriage or to the relationship between a wife and husband; “connubial bliss”; “conjugal visits” [syn: conjugal] adv : in a conjugal manner [syn: conjugally]

Source: WordNet ® 2.0, © 2003 Princeton University