1. a person who leaves one country to settle in another   immigrant   emigrant   2. to reduce to lower rank   denigrate   degrade   3. to make worse   exacerbate   exasperate   4. contest or fight between two persons or sides   dual   duel   5. to spread widely or thinly   diffuse   defuse   6. to make less dangerous or tense   defuse   diffuse   7. to draw out; to extract information   illicit   elicit