useless trivia: What Word Means: Dismisses?

Questions

who was the first person ever to win two nobel prizes?

civil rights leader martin luther king, jr. led more than ________ demonstrators in a march down the mall in washington dc?

sales of what men's underwear item plummeted after clark gable revealed he didn't wear one?

a cricket an inch long has a chirp that is audible for nearly?

the biggest butterfly in the world is the queen alexandra?