The antonym of the word 'antagonism' is _________.

Cordiality

The antonym of the word 'antagonism' is: ☀ Cordiality

Explanation: Antagonism refers to active hostility or opposition. It implies a strong, often mutual, opposition between conflicting parties.

Cordiality is the opposite of antagonism. It refers to a warm, friendly, and sincere relationship or atmosphere. Cordiality suggests goodwill and friendliness rather than opposition or hostility.

In summary, while "animosity," "hostility," and "enmity" are also words conveying a sense of opposition or hostility, "cordiality" is the word that specifically denotes friendliness and warmth, making it the antonym of "antagonism."