Synonyms

Binding can mean something that is required, mandatory, or compulsory. 'Compulsory' (C) is the correct synonym as it refers to something that must be done or is required. Proud means arrogant, Complex means complicated, and Mild means gentle - none of which capture the mandatory nature of binding.

Certain means sure, confident, or without doubt. 'Cocksure' (B) is the closest synonym as it means excessively confident or completely sure. However, it's worth noting that cocksure has a negative connotation of arrogance, whereas certain can be neutral. Other options: Busy means occupied, Calm means peaceful, and Meager means scanty.

Whole means complete, entire, or undamaged. 'Intact' (C) is the correct synonym as it specifically means whole and undamaged, complete, or remaining in original condition. Part is the opposite, Shape refers to form, and Circle is a specific shape - none capture the meaning of completeness or entirety that whole implies.

Unequal means not the same, different, or not equal in status, size, or amount. 'Different' (A) is the correct synonym as it captures the essence of things not being the same. Lenient means permissive, Light means not heavy or bright, and Similar is the opposite of unequal. Different is the most direct synonym.

The word 'start' refers to the beginning or initial point of something. 'Origin' similarly means the point where something begins or comes into existence. 'Centre' refers to the middle, not the beginning; 'entire' means complete; 'end' is the opposite of start.

'Inferior' means lower in rank, position, or quality. 'Lower' is a direct synonym expressing this same concept of being beneath something else in position or quality. 'Moderate' means average; 'wrong' implies incorrectness; 'good' is nearly opposite in meaning.

'Downright' is an adverb meaning thoroughly, completely, or absolutely - used to emphasize a quality. 'Straightforward' captures this sense of being direct, thorough, and without ambiguity. 'Wrong' and 'stupid' are too specific in meaning; 'vague' is nearly opposite.

To 'dupe' someone means to deceive, trick, or cheat them. 'Cheat' is the closest synonym among the options, directly capturing this meaning of deception. 'Shrink' means to reduce in size; 'destroy' means to ruin; 'divide' means to separate into parts.

As a verb, 'incense' means to make very angry or enraged. 'Enrage' is the correct synonym, capturing this meaning of provoking strong anger. 'Increase' means to make larger; 'involve' means to include; 'purify' means to clean or make pure.

'Immortal' means living forever or never dying. 'Deathless' is a direct synonym, expressing this same concept of being exempt from death. 'Merry' means cheerful; 'cruel' means unkind; 'large' refers to size.

'Home' refers to the place where one lives. 'Residence' is a formal synonym for this concept, denoting a place of dwelling. 'Alien' refers to something foreign; 'friend' and 'enemy' describe relationships, not places.

'Merely' is an adverb meaning only or solely, used to emphasize restriction or limitation. 'Solely' is a direct synonym, capturing this same sense of exclusivity. 'Unfit' means unsuitable; 'certain' means sure; 'critical' means crucial.

To 'reveal' means to make known or show something that was previously hidden. 'Expose' is the correct synonym, capturing this sense of uncovering or disclosing. 'Revive' means to bring back to life; 'deny' means to reject; 'allot' means to distribute.

'Sad' describes an emotional state of unhappiness or sorrow. 'Unhappy' is a direct synonym, capturing this same emotional state. 'Dire' means terrible or urgent; 'shy' means timid; 'glad' is nearly opposite in meaning.