Antonyms

Divulge means reveal. Its opposite is keep secret.

Adulteration is making impure by adding inferior elements. Purification is its opposite, the removal of impure elements.

Deposition is the process of (any material) depositing itself (on a surface for example). A process of eroding is a gradual wearing away by abrasion, the opposite of deposition.

Boycott means shun or avoid, patronize means to visit regularly.

A fallacy is mistake in reasoning, a valid argument is its opposite.

Enervate means weaken. Strengthen is its opposite.

Loquacious means fond of talking, taciturn means not liking to speak. So, they are opposites.

Veneration means high regard and respect, derision means scorn and contempt, its opposite.

Repine means regret, express joy is its opposite.

Inveterate means habitual chronic. The most nearly opposite word is casual which means occasional or by chance, its opposite.

Amalgamate means to combine into a unified or integrated whole, or unite; separate is its opposite.

Undermine means to weaken the base or foundation; undergird is to support or strengthen from beneath.

Polemical means of or relating to a controversy, argument, or a refutation; conciliatory means to regain friendship or good will by pleasant behaviour, all meant to reconcile or overcome animosity.

Pertain means related or relevant; be irrelevant is the answer.

Frequency suggests appearing or happening at close intervals, rarity suggests infrequency of occurrence.

Blithe means cheerful and light hearted, happy, joyful; grave means serious, or characterized by dignity and sombreness associated with weighty matters.

Precipitate means to cause to happen, especially suddenly and prematurely, speed up or proceed rapidly; deliberate means unhurried in action, movement or manner; slow or taking more time than is usual or necessary.

Arrhythmic means lacking rhythm or regularity; exhibiting regularity is its opposite.

Untoward means not favourable; unpropitious; favourable and anticipated or something looked forward to is the opposite.

Veritable means real or genuine, specious means having the ring of truth or plausibility but actually fallacious.

Deference means courteous respect submission or connections, yielding to the opinion, wishes and judgement of others, admiration, respect, esteem accorded as right or due. Contempt means disparaging or haughty disdain, as for something base or unworthy, scorn.

Opprobrious means expressing contemptuous reproach; abusive; irreproachable means perfect or blameless in every respect, faultless and therefore above contempt, scorn or reproach.