Antonyms of adj cosher

1 sense of cosher

Sense 1
kosher, cosher -- (conforming to dietary laws; "kosher meat"; "a kosher kitchen")

INDIRECT (VIA clean) -> unclean, impure -- (having a physical or moral blemish so as to make impure according to dietary or ceremonial laws; "unclean meat"; "and the swine...is unclean to you"-Leviticus 11:3)

Similarity of adj cosher

1 sense of cosher

Sense 1
kosher, cosher -- (conforming to dietary laws; "kosher meat"; "a kosher kitchen")
       => clean (vs. unclean) -- (ritually clean or pure)