kindred

 
Pronunciation: /ˈkɪndrɪd/

noun

[treated as plural]
  • one’s family and relations.
  • [mass noun] relationship by blood: ties of kindred

adjective

[attributive]
  • similar in kind; related: books on kindred subjects

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)