Up-and-down Definition
ŭpən-doun
adjective
Going alternately up and down, to and fro, etc.
Webster's New World
Characterized by or exhibiting an alternating upward and downward movement.
American Heritage
Variable; fluctuating.
Webster's New World
Vertical.
Webster's New World
Synonyms:
adverb
(idiomatic) Alternately forwards and backwards along a path.
Walk up and down the corridor.
Wiktionary
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