Main entry: congruent, congruous
Definition: corresponding in character or kind
Antonyms: incongruous
Definition: lacking in harmony or compatibility or appropriateness
Antonyms: unharmonious, inharmonious
Definition: not in harmony
Main entry: congruous
Definition: suitable or appropriate together
Antonyms: incompatible
Definition: not compatible
Antonyms: incompatible
Definition: incapable of being used with or connected to other devices or components without modification