Letters that make bumpy
b, p, m, u, y are letters that make 'bumpy'
2 possible definitions for 'bumpy'
Under this definition, bumpy is an adjective and has the following properties:
smooth has the opposite meaning of bumpy
jerking, jump, bump, blow, jerk, start, jolt, saccade, rock, careen, sway, tilt, startle are derivatives of 'bumpy'.
Under this definition, bumpy is an adjective and has the following properties:
bumpiness is a derivative of bumpy.
"a bumpy country road"