/ ˈkɪndrəd; NAmE / noun , adjective
■ noun ( old-fashioned or formal )
1.
[ pl. ] your family and relatives
—compare kin
2.
[ U ] the fact of being related to another person :
ties of kindred
■ adjective
[ only before noun ] ( formal ) very similar; related :
food and kindred products
I knew I'd found a kindred spirit (= a person with similar ideas, opinions, etc.)
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WORD ORIGIN
Middle English : from kin + -red (from Old English rǣden condition ), with insertion of -d- in the modern spelling through phonetic development (as in thunder ).