Antonyms

To adhere means to stick, to attach, to fasten. Its opposite is to detach, which means to separate, to divide,  to disconnect.

Adulate means to praise too highly or flatter.

Adulteration means contamination, pollution. Its opposite is purification.

Adroit means skillful, dexterous. Its opposite, among the choices, is characterised by clumsiness.

To advocate means to support, to defend, to champion. Among the choices, its opposite is to denounce which means to blame, to censure, to condemn.

Affable means pleasant, congenial, good-natured. Its opposite is irascible, which means bad-tempered, irritable, testy.

To aerate means to mix with air, to fill with gas. Its opposite is to remove air from.

This is the correct option. It implies having a great victory or achievement.

This is the correct option.

This is the correct option as it implies someone who has his feelings and expressions under control whereas jittery implies someone who is nervous.

This is the correct option as it implies something that is easily bent, whereas stiff implies something that is not easily bent or changed in shape.

Abeyance is suspended action. Continuance is not to defer.

(to calm/soothe) an attempt to the hotheads