Antonyms of adj customary

2 senses of customary

Sense 1
customary -- (in accordance with convention or custom; "sealed the deal with the customary handshake")

INDIRECT (VIA conventional) -> unconventional -- (not conforming to accepted rules or standards; "her unconventional dress and hair style")
INDIRECT (VIA conventional, conventional) -> unconventional -- (not conventional or conformist; "unconventional life styles")

Sense 2
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")

INDIRECT (VIA usual) -> unusual -- (not usual or common or ordinary; "a scene of unusual beauty"; "a man of unusual ability"; "cruel and unusual punishment"; "an unusual meteorite")

Similarity of adj customary

2 senses of customary

Sense 1
customary -- (in accordance with convention or custom; "sealed the deal with the customary handshake")
       => conventional (vs. unconventional) (vs. unconventional) -- (following accepted customs and proprieties; "conventional wisdom"; "she had strayed from the path of conventional behavior"; "conventional forms of address")

Sense 2
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")
       => 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")