Antonyms of adj allegiant

1 sense of allegiant

Sense 1
allegiant -- (steadfast in devotion (especially to your lawful monarch or government); "it is impossible to be allegiant to two opposing forces")

INDIRECT (VIA loyal) -> disloyal -- (deserting your allegiance or duty to leader or cause or principle; "disloyal aides revealed his indiscretions to the papers")

Similarity of adj allegiant

1 sense of allegiant

Sense 1
allegiant -- (steadfast in devotion (especially to your lawful monarch or government); "it is impossible to be allegiant to two opposing forces")
       => loyal (vs. disloyal) -- (steadfast in allegiance or duty; "loyal subjects"; "loyal friends stood by him")