fret

worry unnecessarily or excessively

don't fuss too much over the grandchildren, they are quite big now

be agitated or irritated

don't fret over these small details

agitation resulting from active worry

don't get in a stew

a spot that has been worn away by abrasion or erosion

an ornamental pattern consisting of repeated vertical and horizontal lines (often in relief)

there was a simple fret at the top of the walls