"Incredulous" means disbelieving or skeptical. "Clangorous" means noisy, raucous. "Preposterous" means absurd, ludicrous. "Coercive" means threatening, forceful. "Ingenious" means clever, innovative.

"Droll" is another word for humorous or mirthful. "Fictitious" means false, fabricated. "Gloomy" is a synonym for melancholy or downcast or, depending on context, dark and shadowy. "Surreptitious" and "furtive" are synonyms, as are "inexorable" and "unyielding."

"Obsequious" means sycophantic, fawning, flattering, or servile. This is an antonym for "haughty," which also means supercilious. "Droll" means humorous, particularly in a dry way. "Abstemious" means temperate or moderate.

"Unsavory" means disagreeable, disreputable. It often describes a person, area, or situation. "Rambunctious" is another word for boisterous, and "subliminal" is another word for subconscious. "Determined" is a synonym for "dogged" or "resolute." "Petulant" is a synonym for "peevish" or irritable.

"Misanthropic" means unfriendly and "antisocial." "Apocryphal" means false or fictitious. "Vituperative" is another word for bitter, and "ingenious" is another word for clever, crafty, or innovative. "Inexorable" means unstoppable or unyielding.

"Quixotic" means hopelessly, romantically idealistic. "Villainous" is a synonym for "wicked," and "fractious" means grumpy, irritable, or unruly. "Zealous" means passionately enthusiastic. Another word for "creative" is imaginative.

Something "subliminal" is below someone's consciousness or awareness. "Esoteric" is a synonym for "abstruse" or scholarly, and "copious" means abundant or profuse. "Punitive" is another word for punishing. "Thrilling" means exciting, galvanizing, or even shocking.

"Ephemeral" means brief, fleeting, or short-lived. "Exquisite means beautiful or lovely. Something "troubling" is unsettling, and something "irrelevant" is not pertinent. "Smug" is a synonym for "arrogant."

"Ingenious" means clever, inventive, or innovative. Don't confuse it with "ingenuous," which means naive and innocent. "Histrionic" means melodramatic or overly theatrical, and "innocuous" means harmless.

"Caustic" means acerbic, burning, or "acrimonious." "Detrimental" is a synonym for "harmful," and "innocuous" is a synonym for "harmless," so the two concepts are antonyms. "Happy" and "sad" are antonyms, as are "angry" and "serene."