aback in French
aback in French
en arrière
(archaic, Geordie) Towards the back or rear; backwards. [First attested prior to 1150.]
derrière
(nautical) Backward against the mast; said of the sails when pressed by the wind from the "wrong" (forward) side, or of a ship when its sails are set that way. [First attested in the late 17th century.]