wavy
adj.having a shape or pattern that curves in and out. You use this to describe hair that is not straight but not very curly, or lines that look like small waves.
adj.characterised by a series of curves or undulations. Often used to describe hair texture that falls between straight and tightly curled, or physical surfaces with a rolling profile.
“She has long, wavy hair that reaches her shoulders.”
“The artist drew several wavy lines across the canvas to represent the movement of the ocean.”
“The desert landscape was defined by wavy sand dunes that shifted constantly under the pressure of the seasonal winds.”
Typically used attributively before a noun or predicatively after a linking verb like 'is' or 'looks'.
From wave + -y.
See wavey.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.