Below you can find the One way to tell a moth from a butterfly is that these on a butterfly end in a knob Jeopardy Words Answer. The answer to One way to tell a moth from a butterfly is that these on a butterfly end in a knob has 8 letters. This clue belongs to the Insects category and is part of Jeopardy Word Level 665. If you scroll near the bottom you will find other clues and answers part of level 665