wieder

adv · /ˈviːdɐ/ ·

Etymology

From Middle High German wider, whence English widdershins via Middle Low German borrowing; from Old High German widar, from Proto-West Germanic *wiþr (“toward, against”). Cognate with English wither.

Translation

again; indicates that the action taking place has happened before

Siehst du, jetzt hast du’s schon wieder gesagt!

See, now you’ve said it again!
back; indicates that the action will return something to its original state or position

Schalte das Licht wieder aus.

Turn the light back off.