Multiple choice general knowledge math & puzzles de down; undo into; in out of among Reveal answer Fill a bubble to check yourself A Correct answer Explanation The Latin prefix 'de-' signifies 'down', 'away', or 'undoing' an action, as in 'descend' or 'deactivate'. 'Into' is 'in-', 'out of' is 'ex-', and 'among' is 'inter-' or 'epi-'.