κῆρ

Etymology
From. If not simply directly inherited from that form, perhaps a contraction of, related to. Alternatively, Liddell and Scott (1940) suggest that κέαρ may have been a back-formation to κῆρ on the basis of ~.

Noun

 * 1) heart
 * 2) The seat of the will
 * 3) The seat of the passions