A "nuisance" is an irritant or annoyance, so "annoyance" is the correct answer. 

A “harbinger” is an omen, an ominous foreboding. To provide further help, “innate” means natural, something you are born with; “explicit” means clear, definite and obvious; “transparent” means allows light to pass through, see-through; “opaque” means does not allow light to pass through, solid. “Transparent” and “opaque” are antonyms of one another. "Translucent” is a related word that describes something that allows some light to pass through.

“Trepidation” is a feeling of anxiety and unease about the immediate future. To provide further help, “disgust” means revulsion, feeling that something is gross or abhorrent; “envy” means jealousy; “convoluted” means complicated, long-winded.

“Censure” means criticize, blame. To provide further help, “laud” means praise, something that is “laudatory” is deserving of praise; “fervent” means keen and passionate, often too passionate.

“Aptitude” means ability, skill level, and talent. To provide further help, “inability” is the failure or powerlessness of something; “regressive” is returning to a previous condition; “progressive” is forward-thinking and forward-moving.

“Patronage” is financial support given to someone who needs it for education or to run a business. To provide further help, “undermine” means to weaken; “primary” means occurring first or being of greatest importance; “listless” means weak, languid, lacking energy; “anchorage” is a port or dock.

"Deception" is the act of purposely making something false appear to be true. Thus, the best answer choice is "deceit," as a "deceit" also means the act of purposely making something false appear to be true. "Satire" and "ridicule" both refer to the act of making fun of something or someone, and "inconstant" means ever-changing; these answer choices are not as close to "delusion" in meaning as is "deception."

"Tumult" means commotion or uproar, so "uproar" is the correct answer. None of the other answer choices are close in meaning to "tumult": "ratification" is the approval of a suggested law; a "prodigy" is a young person with unexpectedly developed skills in some field; a "geologist" is a person who studies the matter that makes up Earth; and a "disclaimer" is a statement that says that someone or a group refuses to be responsible for something.

"Zest" means great passion or enthusiasm, so "enthusiasm" is the correct answer. None of the other answer choices are close in meaning to "zest": "collection" is a group of similar things that people keep; a "plague" is a widespread and contagious disease; "military" refers to a country's army or armed forces; and "communication" means the transmission of information.

A "deadlock" is a stalemate or a situation in which neither side in an argument, battle, or game can make progress, so "stalemate" is the correct answer. None of the other answer choices is close in meaning to "deadlock": a "subsidy" is money given to a company so that prices can remain low; a "discount" is a reduction of an item's price; an "obsession" means the state of being fully absorbed with or nearly constantly thinking about a person or thing; and "sovereign," when used as a noun, means ruler or leader.