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B2/C1 Vocabulary & Idioms•10 min read•2026-10-20

Top 50 Phrasal Verbs & C1 Idioms for Cambridge CAE, IELTS Speaking & Business English

Mastering phrasal verbs and idiomatic expressions is the fastest way to elevate your English from intermediate (B1) to advanced (C1) fluency in exams and international workplaces.

Author: KaiEnglish Academic Team
Key Takeaways & Core Facts
  • Both IELTS Speaking Band 7.0+ descriptors and Cambridge C1 Advanced Use of English explicitly reward the natural use of phrasal verbs and idiomatic expressions.
  • Mind the register: phrasal verbs shine in Speaking and workplace meetings, whereas formal academic essays (IELTS Writing Task 2) prefer single-verb equivalents (e.g., "put off" -> "postpone", "bring about" -> "generate").

1. How Phrasal Verbs Work & How to Learn Them by Particle

Instead of memorizing random alphabetical lists, group phrasal verbs by their particle logic or business context. For instance, the particle "up" often signals completion or creation (set up, wrap up, draw up), while "off" frequently denotes cancellation or delay (put off, call off, hold off).

2. High-Impact C1 Idioms for Speaking & Business Meetings

Skip outdated textbook clichés like "raining cats and dogs". Instead, use natural C1 expressions that native speakers actually use: "a double-edged sword", "to be on the same page", "to cut corners", "to see eye to eye", "the tip of the iceberg", and "to hit the nail on the head".

Structured Overview & Reference Table
Phrasal Verb / IdiomFormal Academic EquivalentGeorgian MeaningExample in Context
Bring aboutCause / Generateგამოწვევა (ცვლილების)AI has brought about major shifts in education.
Come up withFormulate / Proposeმოფიქრება (იდეის, გეგმის)She came up with an innovative solution.
Put up withTolerate / Endureშეგუება / ატანაWe cannot put up with delays any longer.
Look intoInvestigate / Examineგამოკვლევა / შესწავლაThe committee is looking into the issue.
Point outIndicate / Highlightაღნიშვნა / მითითებაAs the report points out, exports rose by 12%.
A double-edged swordA phenomenon with dual implicationsორმხრივი მოვლენაSocial media is a double-edged sword for teenagers.
C1 Speaking & Business Email Sample

Upgrading B1 Sentences to C1 Natural English

[B1 Level]: "We need to cancel the meeting because we did not find a solution, and we must investigate the budget problem before Friday." [C1 Level with Phrasal Verbs & Idioms]: "We'll have to call off today's meeting since we haven't come up with a viable solution yet. Let's look into the budget discrepancy first so that everyone is on the same page before we wrap up the project on Friday."
Analysis & Scoring Criteria:The C1 version flows naturally using "call off" (cancel), "come up with" (devise), "look into" (investigate), "on the same page" (aligned), and "wrap up" (conclude).
Frequently Asked Questions (FAQ)
With separable transitive phrasal verbs (turn off, put off, bring up), object pronouns (it, them) must go between the verb and the particle: "Turn it off" (never "Turn off it"). Inseparable verbs (look into, come across, look after) always keep the object after the particle: "Look into it".
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