Antonyms

Depletion means decrease of something rapidly.

Extinction means the state of becoming extinct or being absent.

Competence means ability, capability, or skill. The opposite is inability, which means lack of ability or skill. Options A, B, C, and D are all synonyms, not antonyms.

Spiritual relates to religious or sacred matters. Secular means non-religious or worldly, making it the opposite. Religious, holy, sacred, and divine are all related concepts, not opposites.

Concern means worry, anxiety, or alarm. Reassurance is the act of removing anxiety or worry, making it the opposite. Worry, alarm, trepidation, and distress are all synonyms of concern.

Debonair means suave, elegant, charming, or sophisticated in a refined way. Graceless is the opposite, meaning lacking grace or elegance. Suave, elegant, charming, and sophisticated are all synonyms.

Divine means heavenly, celestial, or relating to God. Earthly means relating to the earth or worldly life, making it the opposite. Heavenly, celestial, godly, and blissful are all related to divine concepts.

A molecule is the smallest unit of a compound (microscopic scale). Chunk represents a large, macroscopic piece, making it the opposite in terms of size. Particle, bit, and tiny part are synonyms of molecular concepts (all microscopic). Fragment is a smaller piece, not larger.

Avarice means extreme greed or insatiable desire for wealth. Generosity is the opposite quality - willingness to give or share freely. Greed, meanness, parsimony, and stinginess are all synonyms or closely related to avarice (all represent selfishness with resources).

Authoritarian means enforcing strict obedience to authority (autocratic rule). Democratic is the opposite, referring to a system where power is held by the people or their representatives. Autocratic and dogmatic are synonyms of authoritarian. Harsh and imperious are related but not direct opposites.

Careless means lacking proper attention or thoroughness. Committed is the opposite - showing dedication and careful attention to duty. Casual, apathetic, indifferent, and informal are all related to carelessness (lack of serious attention).

Condense means to make more dense or compact (reduce volume). Expand is the direct opposite - to increase in size, volume, or scope. Abbreviate, abridge, compress, and epitomize are all synonyms of condense (all mean to make smaller or more concise).

Condone means to accept behavior that is considered wrong or to overlook without criticism. Censure is the opposite - to express strong disapproval or criticize harshly. Excuse, disregard, pardon, and wink at are all synonyms of condone (all mean to overlook or accept something).