1. dummy or portrait of person.   insolvent   fugitive   epistemologist   effigy   Hint Half-n-half Clue   2. person who is excessively selfish.   insomniac   hermit   egoist   gynaecologist   Half-n-half Clue   3. person who studies words and their formation.   emissary   herpetologist   etymologist   entrepreneur   Half-n-half Clue   4. person who pretends to be ill to escape duty.   diva   dolt   glutton   malingerer   Half-n-half Clue   5. scholar or distinguished scientist.   savant   dolt   devotee   heckler   Half-n-half Clue   6. irritating person; cattle-biting fly.   hypochondriac   gadfly   dolt   lecher   Half-n-half Clue   7. one who studies relation between organisms and environment.   ecologist   interloper   laity   insolvent   Half-n-half Clue