N1 Vocabulary · Test 48

過密 (かみつ) means 'overly dense, packed, overcrowded' and is commonly used with スケジュール to mean a very tight, packed schedule. Option 3 says 'This business trip has a 過密な (packed/tight) schedule, and it seems there won't even be time to eat slowly' — this is the correct usage.

• 1For a large volume of orders, you would say 殺到する注文 or 多数の注文. 過密な注文 ('overcrowded orders') is not a natural collocation; 過密 is used for schedules, populations, or physical crowding, not for order volume.
• 2Protests intensifying would be described as 激しくなる or 高まる, not 過密になる. 過密 refers to density/crowdedness, not intensity of emotions or actions.
• 4Flowers blooming densely would be described as 密生して or 咲き誇る. 過密に咲き乱れる is unnatural — 過密 carries a nuance of being problematically overcrowded, which doesn't fit the positive imagery of flowers blooming beautifully.

• 過密かみつ — overly dense, packed, overcrowded (often used with スケジュール)

画一的 is read かくいつてき and means 'uniform, standardized, one-size-fits-all.' The sentence means 'It is not good to judge in a uniform way without considering individual circumstances.' 画 is read かく and 一 is read いつ in this compound.

• 1かくいちてき gets 画 right but uses いち instead of いつ for 一.
• 3がいちてき uses が for 画 (wrong reading) and いち for 一 (wrong reading).
• 4がいつてき gets 一 right but uses が instead of かく for 画.

• 画一的かくいつてき — uniform, standardized, applying the same rule to everything without variation

稼働（かどう） means 'operation/running (of machines or equipment).' The sentence says all machines in the factory are being run 24 hours to increase production. 稼働させる (causative form) means 'to make/let (machines) operate,' which fits perfectly.

• 1展開（てんかい） means 'development/deployment/unfolding,' used for strategies, plans, or situations spreading out—not for running machines.
• 3起動（きどう） means 'startup/activation/booting,' referring to the moment a machine is switched on, not continuous operation over 24 hours.
• 4運行（うんこう） means 'operation/running,' but is used for vehicles like trains, buses, or ships (運行する列車), not factory machinery.

• 稼働かどう — operation/running (of machines/equipment)
• 展開てんかい — development, deployment, unfolding
• 起動きどう — startup, activation, booting
• 運行うんこう — operation/running (of trains, buses, etc.)

すさまじい means 'fierce, tremendous, violent' and is used to describe an overwhelming force or momentum. すさまじい勢い（いきおい）で is a common collocation meaning 'with tremendous momentum,' perfectly describing how internet user numbers are growing explosively worldwide.

• 1慌ただしい（あわただしい） means 'busy, hectic, hurried,' describing a rushed atmosphere—not the intensity of growth momentum.
• 2やかましい means 'noisy, loud, clamorous' or 'fussy/strict,' used for sounds or complaints—not for describing momentum.
• 3勇ましい（いさましい） means 'brave, courageous, gallant,' describing a person's demeanor—not applicable to the force of growth.

• すさまじい — fierce, tremendous, violent
• 慌あわただしい — busy, hectic, hurried
• やかましい — noisy, loud, fussy
• 勇いさましい — brave, courageous

直面（ちょくめん）する means 'to face, to confront (a difficulty/problem) directly.' 困難に直面する is a standard collocation meaning 'to face difficulties,' which fits the sentence about encountering various hardships due to language and custom differences while posted overseas.

• 1隣接（りんせつ） means 'adjacent, bordering,' describing physical proximity of locations—not confronting difficulties.
• 3近接（きんせつ） means 'close approach, proximity,' also about physical or conceptual nearness—not about facing hardships.
• 4対面（たいめん） means 'face-to-face meeting, coming face to face (with a person),' used when two people meet directly—not for confronting abstract difficulties.

• 直面ちょくめん — to face, to confront (a difficulty)
• 隣接りんせつ — adjacent, bordering
• 近接きんせつ — close approach, proximity
• 対面たいめん — face-to-face meeting

くよくよ（する） means 'to worry, to fret, to brood (over something).' The sentence says 'Everyone makes mistakes, so don't keep brooding forever—cheer up.' くよくよしていないで means 'stop fretting/worrying,' which fits the context of someone dwelling on a failure.

• 2のろのろ（する） means 'slowly, sluggishly,' describing slow movement or action—not the mental state of worrying.
• 3ひっそり（する） means 'quietly, silently, in a secluded manner,' describing a quiet atmosphere—not relevant to dwelling on failure.
• 4ふんわり（する） means 'softly, lightly, fluffy,' describing something soft or gentle—the opposite tone of what the sentence conveys.

• くよくよ — to worry, to fret, to brood over something
• のろのろ — slowly, sluggishly
• ひっそり — quietly, silently
• ふんわり — softly, lightly, fluffy