Antonyms

Existence means the state of being real or having being. Cessation means the process of ending or stopping, or a coming to an end. These are opposites - existence represents presence and being, while cessation represents ending or stopping.

To expand means to increase in size, volume, or scope. To contract means to decrease, shrink, or draw together. These are direct opposites in terms of size and scope.

Incomplete means not complete, lacking parts, or unfinished. Perfect means complete, flawless, or lacking nothing. These are opposites - incomplete represents a state of lack, while perfect represents completeness.

Descent means the act of going down, downward movement, or a slope going down. Ascent means the act of going up or upward movement. These are direct opposites in terms of direction.

To refuse means to decline, reject, or say no to something. To agree means to consent or say yes. These are direct opposites - refusing is rejection, agreeing is acceptance.

Material means physical, tangible, or related to matter/substance. Theoretical means abstract, conceptual, or based on theory rather than physical reality. These are opposites - material is concrete and physical, theoretical is abstract and conceptual.

Purpose means intention, aim, or a planned reason for doing something. Chance means randomness, luck, or happening without apparent cause. These are opposites - purpose implies deliberate intention, while chance implies lack of intention.

To scatter means to throw about, disperse, or separate things in different directions. To gather means to bring together, collect, or assemble. These are direct opposites - scattering spreads things apart, gathering brings them together.

'Fail' means to be unsuccessful or not achieve a goal. 'Overcome' means to succeed in dealing with or prevailing against a difficulty, which is a valid opposite. 'Waste' means to use resources without purpose, unrelated to failure. 'Attractive' is an adjective describing appearance, irrelevant to the concept of failure. 'Dissent' means to disagree, which is different from failing.

'Accuse' means to charge someone with wrongdoing or fault. 'Excuse' means to forgive, pardon, or release from blame - this is a valid antonym. 'Assented' means agreed (archaic form of assent). 'Quicker' is comparative adjective about speed. 'Attend' means to be present or pay attention. None of these except D relate to blame/forgiveness.