Antonyms of adj usual

2 senses of usual

Sense 1
usual (vs. unusual) -- (occurring or encountered or experienced or observed frequently or in accordance with regular practice or procedure; "grew the usual vegetables"; "the usual summer heat"; "came at the usual time"; "the child's usual bedtime")

unusual (vs. usual) -- (not usual or common or ordinary; "a scene of unusual beauty"; "a man of unusual ability"; "cruel and unusual punishment"; "an unusual meteorite")
        => different -- (differing from all others; not ordinary; "advertising that strives continually to be different"; "this new music is certainly different but I don't really like it")
        => extraordinary (predicate) -- ((of an official) serving an unusual or special function in addition to those of the regular officials; "an ambassador extraordinary")
        => odd -- (not easily explained; "it is odd that his name is never mentioned")
        => out-of-the-way -- (out of the ordinary; "out-of-the-way information")
        => peculiar -- (markedly different from the usual; "a peculiar hobby of stuffing and mounting bats"; "a man...feels it a peculiar insult to be taunted with cowardice by a woman"-Virginia Woolf)
        => unaccustomed -- (not customary or usual; "an unaccustomed pleasure"; "many varieties of unaccustomed foods"; "a new budget of unaccustomed austerity")
        => unique -- (highly unusual or rare but not the single instance; "spoke with a unique accent"; "had unique ability in raising funds"; "a frankness unique in literature"; "a unique dining experience")

Sense 2
common, usual -- (commonly encountered; "a common (or familiar) complaint"; "the usual greeting")

INDIRECT (VIA familiar) -> strange, unusual -- (being definitely out of the ordinary and unexpected; slightly odd or even a bit weird; "a strange exaltation that was indefinable"; "a strange fantastical mind"; "what a strange sense of humor she has")

Similarity of adj usual

2 senses of usual

Sense 1
usual (vs. unusual) -- (occurring or encountered or experienced or observed frequently or in accordance with regular practice or procedure; "grew the usual vegetables"; "the usual summer heat"; "came at the usual time"; "the child's usual bedtime")
       => accustomed, customary, habitual, wonted (prenominal) -- (commonly used or practiced; usual; "his accustomed thoroughness"; "took his customary morning walk"; "his habitual comment"; "with her wonted candor")
       => chronic, inveterate -- (habitual; "a chronic smoker")
       => regular -- (in accord with regular practice or procedure; "took his regular morning walk"; "her regular bedtime")
          Also See-> common#2

Sense 2
common, usual -- (commonly encountered; "a common (or familiar) complaint"; "the usual greeting")
       => familiar (vs. strange) -- (within normal everyday experience; common and ordinary; not strange; "familiar ordinary objects found in every home"; "a familiar everyday scene"; "a familiar excuse"; "a day like any other filled with familiar duties and experiences")