Final answer:
The synonyms of 'deign' are stoop and vouchsafe, while the antonyms are disdain and scorn.
Step-by-step explanation:
The synonyms of the word 'deign' are stoop and vouchsafe.
These words convey the notion of condescending or lowering oneself to a lower level.
The antonyms of 'deign' are disdain and scorn.
These words represent a feeling of contempt or superiority towards someone or something.