"Ennui" is a noun that means "a feeling of listlessness and dissatisfaction arising from a lack of occupation or excitement." While all of the potential answer choices refer to feelings, only "mediocrity," "terror," and "boredom" refer to negatively-connoted emotions. "Terror" is not close in meaning to "ennui," and while "mediocrity" may seem like a potentially correct answer, "boredom" is the best answer choice because it is the closest synonym of "ennui."

"Renown" means fame. For example, an artist of great renown is famous and well known. So, "fame" is the correct answer.

"Discord" means lack of harmony, therefore "disharmony" is closest in meaning to "discord."

A "defect" is a flaw, so "flaw" is the correct answer. A "treasurer" is an officer in an organization that manages the finances. "Candor" means utmost honesty and truthfulness. "Dynasty" is a line of rulers from the same family. "Fatigue" means extreme tiredness.

A "proclamation" is an official announcement. The best choice is "announcement" because it is a part of the definition of "proclamation." Considering the other choices, "sea" refers to a large body of salt water, "scheme" means come up with a plan, often to commit some sort of crime when used as a verb or a plan when used as a noun, and "story" means a narrative designed to entertain readers or listeners.

The "consequence" of something is the result of it or its outcome, so "outcome" is the correct answer. To provide further guidance, a "tirade" is the same thing as an invective and both words mean an angry speech, a "promotion" means the event of being given a role at your place of work that gives you more authority and responsibilities; and a "delegation" is a group of people formally tasked with something.

"Decree" is an official government order or a mandate, so "mandate" is the correct answer. None of the other answer choices are as close to "degree" in meaning as is "mandate": "legislation" means rules and regulations; a "recluse" is a hermit or a person who wishes to remain alone; "etiquette" is the rules of proper social behavior; and an "omen" is something that predicts a future event.

An "excursion" is a noun that means an outing or a journey, so the answer choice closest in meaning to "excursion" is "trip," which when used as a noun means a journey or a voyage. Considering the other answer choices, none are close in meaning to "excursion": "file," when used as a noun, means a collection of records or a digital document; "pantry" is a noun meaning a storage closet; and "exercise" is a series of physical activities done in order to maintain one's health.

A “premonition” is a hunch that something bad is about to happen; this is most similar in meaning to “foreboding.” To provide further help, a “concern” is a worry about something; “passion” is strong feelings about something; “territory” is land owned by someone or something; and “germination” is growth from a seed into a plant.

An “insignia” is an official symbol or mark that identifies a group, and as such it is most similar in meaning to “emblem.” As for the other answer choices, "signal" means gesture or sign with a specific meaning in a given context; "signature" means one's formally written name as used to validate documents; "insignificance" means unimportance, and "scroll" means a long, rolled piece of paper with writing on it.