Synonyms

Elevate means to raise something to a higher level or position, either literally (lift up) or figuratively (improve status/mood). Boost is the best synonym here - both imply lifting or increasing. Degrade is an antonym (opposite). Appoint and achieve are unrelated to the meaning of raising.

Facile means easy to do, effortless, or superficial (done without deep thought). Effortless is the correct synonym - both describe something achieved with little difficulty. Difficult is an antonym (opposite). Thoughtful and careful imply deliberation, which contradicts the 'easy/superficial' meaning of facile.

Admire means to regard with respect or warm approval. Esteem is a close synonym - both describe holding someone or something in high regard. Scorn is an antonym (opposite) meaning contempt or disrespect. Inform and announce are verbs related to communication, not feelings of respect.

Declare means to announce or make something known formally and clearly. Express is the best synonym among the options - both involve communicating or making something known. Beg, terminate, and allow have completely different meanings unrelated to making announcements.

Extravagant means spending much more than necessary, lacking restraint in spending, or wastefully luxurious. Lavish is the correct synonym - both describe excessive spending or luxury. Sensible, prudent, and thrifty are antonyms (opposites) meaning careful with money or resources.

Familiar means well-known, recognizable, or friendly/cordial. Friendly is the correct synonym here - both describe a warm, approachable demeanor. Unusual, cold, and detached are antonyms (opposites) suggesting strangeness or emotional distance.

Bewitching means captivating or enchanting, which is very similar to charming. Unpleasant, weak, and horrid all have negative or weak connotations, opposite to charming's positive appeal.

Felicitate means to congratulate or express pleasure at someone's success or good fortune. Injure, damage, and bind are unrelated to expressing congratulations.

Stumble means to trip or lose balance, but can also mean to hesitate or falter in speech or action. Speak, think, and permit are unrelated to the concept of stumbling or hesitating.

Radiant means shining brightly or glowing, which is the direct synonym of glowing. Pale, dull, and grey all describe lack of color or brightness, opposite to glowing.

Frantic means wildly emotional, desperate, or mad with excitement or fear. Composed, poised, and cool all mean calm and collected, opposite to frantic's chaotic energy.

Figurative means representing something through metaphor or analogy rather than literal reality, which aligns with abstract. True, plain, and accurate suggest literal or factual meanings, not figurative.

Forbid means to refuse to allow or to prohibit. Disallow is the direct synonym. Bid can mean to command or order, enable is the opposite, and wither means to dry up, none related to forbidding.

Aid means to help, support, or assist. Assist is the direct synonym. Create means to make, transform means to change form, and cheat means to deceive, none related to helping.

Filth means foul or dirty matter, garbage, or waste. Garbage is the closest synonym. Machine, container, and vessel are objects, not related to dirt or waste.