Yes. Or usual and unusual; rare and common.
what is the opposites word for farewell
Yes, it is an adverb, the adverb form of the adjective usual. It means typically, ordinarily, or commonly.
Synonyms for usual might be normal, commonplace, standard.
Usually
Usually
Not usual; uncommon; rare; as, an unusual season; a person of unusual grace or erudition.
Modest is the usual opposite of narcissistic.
unusual means not usual and commen ordinary rare
Usual
The opposite would be usual, ordinary, common, or average.
The opposite would be orthodox: conventional, traditional, standard, or usual.
usual
The usual opposite of push is pull.The opposite of push (press, advocate) could be oppose.Pull.
The opposite, or alternative, to usual job would be called a sideline or side job.*The word avocation is often used as its own opposite, to mean either a job outside of usual work, or to mean one's usual occupation, as in vocation. Only the context would tell you which meaning it intends.
Worthless
The direct opposite of adjacent is nonadjacent (or non-adjoining). But for geometry or location, the usual opposite is "opposite" meaning "across from."
The usual opposite of smiling is frowning. (it could also be unsmiling, or somber.)