— up-and-downness , n.
/up"euhn down"/ , adj.
1. moving alternately up and down: the up-and-down swing of levers; an up-and-down tune.
2. having an uneven surface: up-and-down countryside.
3. changeable: up-and-down luck.
4. perpendicular or nearly so: a straight up-and-down hillside.
[ 1610-20 ]