jeal•ousˈdʒɛl əs(adj.)

1. resentful and envious, as of someone's success, advantages, etc.:

   to be jealous of a rich brother.

2. proceeding from suspicious fears or envious resentment:

   a jealous rage.

3. inclined to suspicions of rivalry, unfaithfulness, etc., as in love:

   a jealous husband.

4. watchful in guarding something:

   to be jealous of one's independence.

5. intolerant of unfaithfulness or rivalry:

   The Lord is a jealous God.

   Category: Bible

Origin of jealous:

1175–1225; ME jelous, gelos < OF gelos < VL *zēlōsus= LL zēl(us)zeal+ōsus -ose1

jeal′ous•ness(n.)