Not usual; uncommon; rare; as, an unusual season; a person of unusual grace or erudition.
The opposite of unusual is common.
The prefix "un-" means not or opposite of. Therefore, "unusual" means not usual or out of the ordinary.
The opposite of typical is unusual or unique.
For common meaning ordinary, average, or widely found, the opposites could be uncommon, unique, unusual, rare, or special.For common referring to people, the opposite could be sophisticated, regal, refined, cultured, or stylish.For common meaning alike, the opposites could be unlike, unshared, or discrete.Regal, rare, unlikely, uncommon, unusual, private, ornate.
Usual
The opposite would be usual, ordinary, common, or average.
Rare means uncommon, or unusual. So an obvious antonym ( opposite ) would be common. Other opposites are frequent, occuring , etc.. practically any word that shows multiples.
common
Unusual or abnormal
usual
what is opposite meaning of lucid
Not typical :P