jealousy

Concise Oxford English Dictionary © 2008 Oxford University Press:
jealous/ˈʤeləs/

▶adjective

• 1 envious of someone else's possessions, achievements, or advantages.

  ■ suspicious or resentful of a perceived sexual rival.

• 2 fiercely protective or vigilant of one's rights or possessions.

• 3 (of God) demanding faithfulness and exclusive worship.

– derivatives
jealously adverb,
jealousy noun (pl. jealousies).

– origin ME: from OFr. gelos, from med. L. zelosus (see zealous).