1. intelligent at inventing; cleverly made   ingenuous   ingenious   2. a soldier who belongs to an underground movement   gorilla   guerrilla   3. frank; artless; naive   ingenuous   ingenious   4. unbelievable   incredible   incredulous   5. to display ostentatiously; to show off   flaunt   flout   6. likely to be remembered; important; significant   historic   historical   7. large group; crowd   hoard   horde