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Webster 1913 Edition
Concubinate
Con-cu′bi-nate
,Noun.
 [L. 
concubinatus
.] Concubinage. 
[Obs.] 
Johnson.
 Webster 1828 Edition
Concubinate
CONCUBINATE
,Noun.
 Definition 2025
concubinate
concubinate
English
Noun
concubinate (plural concubinates)
-  (obsolete) A concubinage.
- (Can we find and add a quotation of Johnson to this entry?)