1. (a.) Of a similar nature; Of the same family; akin; related by birth\; proceeding from the same stock or root; allied; kindred; as, a cognate language.

2. (a.) Allied by blood; kindred by birth; specifically (Law), related on the mother's side.

3. (n.) One who is related to another on the female side.

4. (n.) One of a number of things allied in origin or nature; as, certain letters are cognates.

affiliated affinal affinitive agnate akin allied ally alter ego analogon analogue ancestry associate avuncular blood blood relation blood relative brother clansman close copy close match closely related collateral collateral relative common companion complement congenator congener congeneric congenerous congenial connate connatural connected connections consanguine consanguinean consanguineous conspecific coordinate correlate correlative correspondent counterpart derivation derivative distaff side distant relation distantly related doublet enate eponym equivalent etymon family fellow flesh flesh and blood folks foster general generic genetically related german germane image incident kin kindred kindred spirit kinfolk kinnery kinsfolk kinsman kinsmen kinswoman kith and kin like likeness mate matrilateral matrilineal matroclinous near duplicate near relation next of kin novercal obverse of common source of the blood parallel patrilateral patrilineal patroclinous pendant people picture posterity primitive reciprocal related related by blood relations relatives root second self sib sibling similitude simulacrum sister soul mate spear kin spear side spindle kin spindle side such suchlike sword side tally the like of the likes of tribesman twin universal uterine uterine kin