Hi REnzo JEsus,nbsp;nbsp; nbsp; The antonym of smoothness is the opposite of the meaning of smoothness and its synonym would be similar words.Synonym: nbsp; smoothness, smoothness, finesse, smoothness, uniformity, tenderness, delicacy, subtlety, delicacy, lightness, grace, lightness, ductility Antonyms : nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; roughness, surface roughness nbsp; UN Saludo