Free HESI A2 Vocabulary guide

November 2026 - Idioms Study Guide

An idiom is a fixed expression whose intended meaning cannot be recovered by reading every word literally. HESI A2 questions place idioms in context, so the safest method is to replace the whole phrase with a plain statement that preserves the sentence’s tone.

Updated November 2026

Vocabulary guide Vocabulary 4 min read

Practice As You Read

Try 3 short questions throughout this guide. Check each answer to learn from the explanation.

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Core ideas to know

Learn the relationships, not a string of isolated definitions. These are the facts that let you reason through unfamiliar wording.

  • Idioms are nonliteral: “on the fence” describes indecision, not a physical location.
  • Most idioms are fixed expressions; changing a preposition or key word can make the phrase nonstandard.
  • Context determines whether an expression is literal or idiomatic. “Break the ice” can describe ice or ease social tension.
  • Register matters: idioms common in conversation may be inappropriate in formal or clinical writing.
  • The correct paraphrase carries the same attitude and degree, not merely the same broad topic.

A reliable way to answer

Use the same short process every time so the wording of the question does not decide your method for you.

  1. Notice whether the literal reading is impossible or irrelevant in context.
  2. Read the surrounding sentence for the result, emotion or contrast associated with the phrase.
  3. Replace the entire expression with one plain phrase.
  4. Check that the replacement preserves tone, strength and grammar in the sentence.

Question 1 of 3

In “After weeks of delay, the approval finally gave the project a green light,” what does “a green light” mean?

Answer Choices for Question 1

View the Answer and Explanation

Correct answer: B. permission to proceed

The approval allows the delayed project to move forward, so green light means permission to proceed. The literal traffic image is not the intended meaning.

Distinctions that earn marks

IdeaWhat it meansDo not confuse it with
Idiom Fixed phrase with nonliteral meaning Literal phrase whose words keep ordinary meanings
Meaning The idea conveyed in context Image, the concrete picture the words create
Informal expression Suitable for conversation Formal wording suited to professional prose

Read every word in the stem before choosing. HESI distractors are often true statements that answer a nearby question rather than the one that was asked.

Terms to know

Idiom
A conventional expression with a meaning beyond its literal words.
Literal
Using the ordinary, direct meaning of the words.
Register
The level of formality appropriate to a setting and audience.

Question 2 of 3

Which revision is most appropriate for a formal report?

Answer Choices for Question 2

View the Answer and Explanation

Correct answer: B. The team identified the precise cause.

Identified the precise cause states the intended meaning directly in formal language. The other choices are conversational idioms whose meaning is less precise in a report.

Key points

  • Interpret an idiom as one unit rather than word by word.
  • Use the surrounding result or reaction to infer meaning.
  • Replace informal idioms with direct language in professional writing.

Question 3 of 3

In which sentence is “break the ice” used literally?

Answer Choices for Question 3

View the Answer and Explanation

Correct answer: B. The ship must break the ice to reach port.

The ship physically breaks frozen water, so the phrase is literal there. In the other sentences, it means reducing social awkwardness or beginning interaction.

HESI · Idioms

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