fore-and-aft

The term is a nautical compound originating from the directional language of Old English seafaring. 'Fore' derives from Proto-Germanic fura- and ultimately Proto-Indo-European per-, with a core sense of "forward, through, before." Its counterpart, 'aft', comes from Proto-Germanic afta- or aftan, meaning "behind, back." The compound "fore-and-aft" emerged to describe the orientation of sails set parallel to the keel line, running from the front (fore) to the back (aft) of the vessel, in contrast to square sails set across the width of the ship. This specific rigging configuration, which allows for more efficient sailing into the wind, gave the phrase its precise technical meaning in maritime English.

This is a fixed compound phrase formed from the directional adverbs 'fore' (from Old English 'fore', meaning in front of, before) and 'aft' (from Old English 'æftan', meaning from behind, behind). The conjunction 'and' links them.