Vocabulary: Synonyms and Antonyms

Augury refers to the practice of divination or interpreting omens and signs. An omen is a sign or portent believed to foretell the future, which is the closest synonym to augury among the options.

Queasy and squeamish, both refer to 'feel sick or disgusted'.

Loath means 'reluctant or unwilling'. Abominate refers to 'loathe'.

An arbiter is a person or body appointed to settle a dispute or make a binding decision, serving as an intermediary between conflicting parties. Intermediary correctly captures this role of being a go-between or mediator.

Serrated means having a notched or toothed edge like a saw. The opposite would be something smooth and without notches. While 'notch less' is an unusual phrasing (likely 'notchless' was intended), it correctly conveys the opposite meaning of being without notches or teeth.

To ferret means to search intensively or uncover something by careful investigation. Dissemble means to conceal or disguise, often by pretending. These are opposites: ferreting involves revealing hidden truths, while dissembling involves hiding them.

A facade is the front or exterior face of a building, or more generally, a superficial appearance or false front. The interior is the opposite - what lies behind or beneath the surface rather than what is presented outwardly.

Febrile means relating to fever or feverish activity, characterized by heat and excitability. 'Lusty' in its traditional sense means vigorous, healthy, and full of life energy - the opposite of feverish, sickly, or overheated. 'Lusty' here connotes robust health rather than feverish illness.

-ine (like, or having the nature of)
Other words: Feline, canine, bovine, aquiline, equine, crystalline, labyrinthine

Sloth means 'reluctance to work or make an effort; laziness'.

Stolid means calm, dependable, and showing little emotion or excitement - unemotional and impassive. Excitable is the opposite - easily aroused to emotion or quick to show enthusiasm or agitation. While 'friendly' might seem appealing, it's not the true opposite of stolid.

Lunacy means madness or insanity. Sagacity means wisdom, sound judgment, and mental acumen - the direct opposite of foolishness or mental instability. While 'veracity' relates to truth, 'sagacity' specifically refers to wisdom and good judgment, making it the true opposite of lunacy.

Hidebound means stubbornly conservative or inflexible, unwilling to change or adapt new ideas. 'Impressionable' means easily influenced or susceptible to change - the opposite of being rigid or hidebound. While 'heterodox' means unorthodox, it doesn't directly contrast with being inflexible.

MANSUETUDE means gentleness, mildness, or meekness of character. Barbarity refers to cruel, brutal, or savage behavior, which is the direct opposite of a gentle and mild disposition.

-escent/escence (becoming)
Other words: Adolescent, frondescent, effervescent, crescent, quiescence

PERIPATETIC means moving from place to place, itinerant, or walking about. Stationary describes something fixed in one place and not moving, which is the direct opposite of this wandering nature.

-al (suitable for)
Other words: Bacchanal, visceral, prodigal

GAINSAY means to deny, contradict, speak against, or oppose something. Grant means to give, allow, or concede, which is the opposite of denying or contradicting.

-ance/ancy (state of being)
Other words: redundancy, piquancy, precipitancy, relevance, significance

PELLUCID means transparent, clear, or easily understood - literally allowing light to pass through. Turbid means cloudy, muddy, or opaque, which is the direct opposite of clear and transparent.

SUBLIME means noble, majestic, exalted, or of lofty character. Base means low, mean, ignoble, or lacking dignity, which is the direct opposite of the elevated and noble qualities of the sublime.

GLOAT means to feel or express triumphant satisfaction, especially over someone else's misfortune. Lament means to mourn, grieve, or express deep sorrow, which is the opposite of feeling triumphant or smug.

DOFF means to remove something, typically clothing or a hat. Don means to put on or clothe oneself in something, which is the direct opposite of removing it.

-ant (that has or does)
Other words: Defiant, discordant, mordant, complaisant, abundant, exuberant, accordant

 Annihilate refers to 'destroy utterly; obliterate'.
Contrive refers to 'create or bring about'.

-ous (characterized by)
Other words: Voracious, virtuous, gracious, victorious, avaricious, lustrous

-ence (quality or state)
Other words: Intelligence, prudence, significance, adolescence

-fic (making)
Other words: Prolific, scientific

DECREPIT means worn out, weak, infirm, or deteriorated due to age or use. Sturdy means strong, robust, and durable, which is the direct opposite of being weak and worn out.