To "adulterate" something means to make something impure. To "decontaminate" something means to make something pure again, to make something no longer contaminated. As such, these two words are antonyms. Which of these answers is an antonym of "verify" (prove is true)? The correct answer is "debunk" which means prove is untrue. All of the other answer choices are all also antonyms of "debunk" and synonyms of "verify."

To begin with "maladroit" means not skilled and "deft" means skilled, so these to words are antonyms. To solve this problem you therefore need to determine which of these answer choices is an antonym of "immaterial." "Immaterial" means unimportant, not significant given the circumstances. The correct answer is therefore "pivotal" because this word means of fundamental importance, of great significance. Additionally, "opaque" means not transparent, not allowing light to pass through; "extenuating" means excusable, (of circumstance) make seem less serious; "blissful" means very happy; "blithe" means indifferent, showing a casual and inappropriate lack of concern for something.

To begin with "florid" means ornate, excessively decorated, adorned. So, "florid" and "unadorned" are antonyms of one another. The correct answer then must be an antonym of "salubrious" which means beneficial, healthy. So, the correct answer is "unhealthy." Additionally, "satiated" means satisfied.

To begin with "empirical" means based on evidence or observation and "theoretical" means based on theory, not based on evidence. So, to solve this analogy you need to determine which of these answer choices is an antonym of "emotional." The correct answer is "stolid" which means showing little emotion, impassive, dispassionate. All the other answer choices are very loosely synonyms, they all pertain to being overly emotional, enthusiastic, or invested in a cause. They are all antonyms of "stolid."

To begin with "slipshod" means careless, lacking attention or consideration. Whereas, "meticulous" means excessively careful, paying close attention to detail. These two words are antonyms because they have the opposite meaning. So, to solve this analogy you need to determine which of these words has the opposite meaning to "terminus." The "terminus" is where something ends, so you are looking for answer choice that means something like where something begins, the point of origin. The correct answer is therefore "genesis." Additionally, an "autocrat" is a ruler who has absolute power, a tyrant; "megalomania" is an obsession with power and control; a "gala" is a festival, a formal party; an "iota" is an exceedingly small amount of something.

To begin with "unsystematic" and "orderly" are antonyms, so to solve this analogy you need to determine which of these answer choices has the opposite meaning to "fruitful." "Fruitful" means productive, prolific, producing many things. So, the best available antonym is "abortive" which means not productive, not successful. Additionally, "cogent" means (of an argument) convincing and reasonable; "feral" means wild, untamed; "domesticated" means tamed, not wild, made into a pet; "fecund" means fertile, abundant, producing a lot of life.

To begin with "vague" means hazy and unclear due to a lack of detail or analysis. And "incisive" means keen, astute, sharp-witted, able to penetrate to the most important point due to the right amount of detail and analysis. These two words are antonyms, so to solve this analogy you need to determine which of these answer choices is the best available antonym for "composed" which means calm and under control in a potentially stressful situation. The correct answer is therefore "irascible" which means hot-tempered, quick to anger, neither calm nor composed, petulant, crabby. Additionally, "pretentious" means disingenuous and self-important; "alluring" means tempting, attractive; "obfuscating" means obscuring, confusing, designed to conceal the truth through confusion; "outlandish" means bizarre, weird, excessively eccentric and showy, idiosyncratic.

To "bind" is to tie together. If you "bind" something, you do  so to keep it from separating.

Do you "banish" something (or someone) to keep it from returning? Yes. To "banish" is to send something away or to force someone to leave a country.

If something "surges," is it to keep it from failing? No. And there really isn’t much of a connection. (You could say that if there is a power surge, your electrical items might fail to function, but that’s a long-shot and not the same connection as that of bind and separating.

If you "engulf" something, do you do it to keep it from covering? No. To "engulf" means to cover completely, as in “The house was engulfed in flames in a matter of moments.”

Do you stir something to keep it from melting? Probably not. You might stir something that is melting to keep it from burning or sticking.

"Garrulous" means very talkative,  while "taciturn" means saying few words. So these are antonyms (opposites).

Is impervious the opposite of penetrable? Yes. "Impervious" means not allowing entrance or passage, like a castle that is impervious to attack. "Penetrable" means allowing things to pass through or penetrate. So "impervious is to penetrable" is the answer.

Is "excessive" the opposite of "verbose"? No. There is a connection: "verbose" means using an excessive number of words to say what could be said in a simpler manner. But they aren’t antonyms.

Are "previous" and "prior" antonyms? No, they’re synonyms, both meaning happening at an earlier time.

Are "spontaneous" and "whim" antonyms? No. "Spontaneous" means occurring without previous thought or planning. ("Our last minute trip to the beach was a spontaneous decision.") A "whim" is a sudden desire or change of mind. (I planned to go shopping, but I had a whim to go to the beach so I changed my plans at the last minute.) "Spontaneous" and "whim" have a connection, but it isn’t that they’re opposites.

"Average" and "standard" are close in meaning, not opposites. 

"Opaque" means not transparent, not clear, and not allowing light to pass through. "Transparent" means see-through, or in other words, allowing light to pass through. These two words are therefore antonyms, and to solve this analogy, you need to determine which of these words has a meaning opposite that of "habitable." "Habitable" means able to be lived in or able to be inhabited. One might refer to undeveloped land that someone is considering building a house on as being habitable. Which of the answer choices has a meaning that is most clearly the opposite of this one? The correct answer is "inhospitable." You can figure out what this term means by considering its prefix, "in-," which means not. "In-hospitable" means not hospitable, or not welcoming and not able to be inhabited. You might refer to rugged terrain that offers little food, water, or shelter as being "inhospitable." Note that since "habitable" and "hospitable" are close in meaning, the "in-" in "inhospitable" is very helpful in identifying the term as an antonym of "habitable."

Additionally, "menacing" means threatening or suggesting danger; "fragrant" means having a scent that people find pleasant; "drastic" means extreme; and "tertiary" means coming third in a list of something, occurring third.