means To withdraw or pull back from a position, situation, or difficulty — whether that's an army falling back, or a person stepping away to rest and reflect.

from From the Old French 'retret,' the past participle of 'retraire,' meaning to draw back or pull away — itself from the Latin 'retrahere,' a tidy compound of 're-' (back) and 'trahere' (to drag or pull), the same 'trahere' lurking in 'tractor' and 'attract.' So at its root, a retreat is literally a dragging-of-oneself backward, which feels about right whether you're a routed regiment or someone fleeing email for a weekend in the woods.