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scroll /skrəʊl/
1 [no object, with adverbial] move displayed text or graphics in a particular direction on a computer screen in order to view different parts of them:
she scrolled through her file.
• (of displayed text or graphics) move up, down, or across a computer screen.
2 [with object] cause to move like paper rolling or unrolling:
the wind scrolled back the uppermost layer of loose dust.

late Middle English: alteration of obsolete
scrow‘roll’, shortening of escrow.

Last week's word

stumble /ˈstəmbəl/
verb [no object]
trip or momentarily lose one's balance; almost fall:
her foot caught a shoe and she stumbled.
• [with adverbial of direction] trip repeatedly as one walks:
his legs still weak, he stumbled after them.
• make a mistake or repeated mistakes in speaking:
she stumbled over the words.
• (stumble across/on/upon) find or encounter by chance:
they stumbled across a farmer selling 25 acres.

stumble /ˈstəmbəl/
1 she stumbled and fell heavily: TRIP (OVER/UP), lose one's balance, lose/miss one's footing, slip.
he stumbled back home: STAGGER, totter, teeter, dodder, blunder, hobble, move clumsily.
she stumbled through her speech: STAMMER, stutter, hesitate, falter, speak haltingly; informal fluff/flub one's lines.
stumble across/on
I stumbled across these old photographs in the attic: COME ACROSS/UPON, chance on, happen on, bump into, light on; discover, find, unearth, uncover; informal dig up.

Middle English (as a verb): from Old Norse, from the Germanic base of