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TOEIC Link Part 5: adverse versus averse

Adverse describes a harmful or unfavorable thing — adverse weather, adverse effects. Averse describes a person who is opposed or reluctant — averse to risk. Part 5 places the pair in the same slot because both look alike, but one modifies conditions and the other modifies attitudes, so the noun being described decides the answer.

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TOEIC Link Part 5: adverse versus averse

Adverse and averse differ by a single letter, share an etymological root (Latin vertere, "to turn"), and are both adjectives. That makes them an ideal Part 5 trap: drop them into the same blank and grammar alone gives you no way to choose. The split is entirely about what kind of noun the adjective attaches to. Adverse describes a thing, condition, or outcome that is harmful or unfavorable. Averse describes a person (or a person's stance) that is opposed or reluctant. For the broader habit of reading the slot's required sense before you answer, see word choice versus word form.

The core rule: condition versus attitude

  • adverse (adjective) modifies a thing or circumstance and means unfavorable, harmful, working against you: adverse weather conditions / adverse effects of the medication / The merger took place under adverse market conditions. / an adverse ruling from the court.
  • averse (adjective) modifies a person or their disposition and means opposed to, strongly disinclined: Management is averse to taking on more debt. / She is risk-averse. / Investors are averse to uncertainty.

A memory hook: a-D-verse has a D like in "disaster" — it describes bad conditions. a-verse sounds like "a-verse" / "a-voice" raised in objection — it describes someone who pushes back. If the blank is followed by (or refers to) a thing — weather, effects, conditions, reaction, publicity — choose adverse. If the subject is a person, company, or group and the sentence is about willingness, choose averse.

The grammatical tell: "averse" almost always takes "to"

The single most reliable signal in Part 5 is the preposition. Averse is nearly always followed by to: averse to change, averse to risk, averse to the idea. If you see a blank immediately before to and the subject is a person or organization, the answer is averse.

Adverse does not take to this way. It sits directly in front of the noun it modifies: adverse conditions, adverse publicity, adverse impact. So a quick scan for the word to right after the blank resolves most items instantly — much like the deadline-versus-duration tell in by versus until, where one small function word fixes the whole choice.

Worked Part 5 examples

  1. The new policy is expected to have an __ effect on small businesses. → adverse (it modifies effect, a thing; "averse effect" is impossible because effects do not have attitudes).
  2. The board is __ to any plan that increases short-term costs. → averse (subject is the board, a group, and the blank is followed by to).
  3. Flights were canceled due to __ weather. → adverse (modifies weather, a condition).
  4. Many consumers remain __ to sharing personal data online. → averse (subject consumers + following to).

Why Part 5 loves this pair

The trap works because test-takers translate both words into a single vague idea — "negative" — and then guess. But the two words occupy different grammatical roles: adverse is a describer of circumstances, averse is a describer of a stance, and the latter drags the preposition to along with it. Train yourself to ask two questions in order: (1) Is the noun a thing or a person? (2) Is the word to sitting right after the blank? Either question alone usually settles the item, and together they are decisive.

Quick recap

  • adverse = unfavorable conditions or outcomes; modifies things; no to — adverse effects, adverse weather.
  • averse = opposed or reluctant; modifies people; almost always averse to — averse to risk.
  • Decision shortcut: person + to → averse; thing/condition → adverse.

Master the small word-choice pairs and Part 5 stops being a memory test and becomes a reading test. For the related, equally treacherous pairs that hinge on one letter, review imply versus infer and eminent versus imminent.