Antonyms

Overt means done or shown openly. Covert is the direct opposite, meaning not openly acknowledged or displayed.

Gawky means nervously awkward and ungainly. Dexterous is the opposite, meaning showing or having skill, especially with the hands.

Militate means to be a powerful factor against something, or to oppose. The exact opposite in meaning is to support or favor.

Monotonous means lacking in variety and interest. Interesting is the direct opposite.

To abridge means to shorten a piece of writing. Expand is the direct opposite.

Aesthetic relates to beauty or the appreciation of art. Crude, meaning lacking refinement or polish, is the most appropriate antonym among the choices.

Improper means not in accordance with accepted rules or standards. Apt, meaning appropriate or suitable in the circumstances, is the direct opposite.

: 'radically' means in a complete manner; thoroughly or fundamentally. This means the same as 'severely'. 

Hence the Correct Answer is 1 

Correct Answer: 3  'To curb' is to restraint or to check something .Therefore 'curb' and 'control' are similar in meaning.      

Correct Answer: 4 

Solution: 'spurious' and 'genuine' are opposites. Spurious means something that is not genuine, authentic, or true, it is counterfeit'   

Froward means not easily controlled; stubbornly willful; contrary. Its opposite is accordant, meaning           in agreement or harmony. Hence, (E) is the answer.

Audacious means bold or daring; fearless. Tremulous means fearful; timid; timorous. Hence, (C) is the answer.

Gargantuan means enormous, huge, immense. Its opposite is unjust punishment. Bantam means small, diminutive, tiny. Hence, (A) is the answer.

“Cognoscente” is a person with special knowledge in some field, esp. in fine arts; expert; connoisseur. Its antonyms is “abecedarian”, who is a person learning the alphabet; i.e. any beginner or novice. Hence, (C) is the answer.

Sycophant a person who seeks favor by flattering people of wealth or influence; parasite; toady. Potentate is a person having great power; ruler; monarch. Hence, (D) is the answer.