American Heritage Dictionary
(2)
Century Dictionary
(2)
GNU Webster's 1913
(1)
WordNet
(1)
Elsewhere on the web
The organization's Web site points to a number of studies indicating that children in homes where adults cohabit are more likely to suffer abuse or witness abuse and to have to endure adult relationships that "dissolve at twice the rate of marriages."— tennessean.com - Top News from The Tennessean, MUSIC CITY U.S.A
The couple's agreement called for alimony only until she remarried or was "cohabit (ing)" with another person for at least three months, and Craissati pointed out that his ex-wife, recently convicted of a serious DUI offense, is now "cohabiting" with a cellmate in prison.— Artvoice - Buffalo's #1 Newsweekly
According to Cherlin, Americans, when compared to people of other first world western nations, marry and cohabit earlier, divorce more quickly and jump back into marriage more readily.— MND: Your Daily Dose of Counter-Theory
While some people still choose to marry young, others elect to cohabit with varying degrees of commitment or intentions of eventual marriage.— The Chicago Blog

American Heritage Dictionary (1)
Century Dictionary (1)
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