ugly
awkward
hard
rough
Answer is Right!
Answer is Wrong!
The correct answer is D. Rough.
Smooth is an adjective that means free from roughness or unevenness. It can also mean free from difficulties or problems.
Rough is an adjective that means having an uneven or bumpy surface. It can also mean not smooth or even in manner or character.
Ugly is an adjective that means unpleasant to look at.
Awkward is an adjective that means not graceful or easy to do.
In this case, the opposite of smooth is rough. This is because rough is the opposite of smooth in both its literal and figurative senses. A rough surface is not smooth, and a rough manner is not smooth.