Noun

1. A state of suspicious guarding towards a spouse, lover etc., from fears of infidelity.
2. A resentment towards someone for a perceived advantage or superiority they hold.
3. A close concern for someone or something, solicitude, vigilance.
   • 1485, Sir Thomas Malory, Le Morte Darthur, Book VIII:

     And therefore by my wyll I wolde have dryvyn hym away for jelosy that I had of hys lyff [...].

Related terms

• jealous adjective
• jealously adverb
• jalousie
• zealous