up–and–down

adjective \-ˈdau̇n\

Definition of UP-AND-DOWN

: marked by alternate upward and downward movement, action, or surface

See up-and-down defined for kids

circa 1755

UP-AND-DOWN Defined for Kids

adjective \ˌəp-ənd-ˈdau̇n\

: switching between upward and downward movement or action

: ¹perpendicular 1 <an up-and-down post>

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