Practice
Phrasal verbs with boil: meanings and examples
A pot can boil over, but a disagreement can boil over too. With phrasal verbs, the small word after boil changes the meaning.
Recognize common phrasal verbs with boil and choose the one that matches a situation involving reduction, overflow, or strong emotion.
Read and practice
Read the examples and try the written questions in this guide. Listening recordings are not available for this lesson yet.
Try the written questions
boil down, boil over, and boil away /bɔɪl daʊn/, /bɔɪl ˈoʊvər/, /bɔɪl əˈweɪ/
The short answer
Use boil down for reducing something to its essential point or making liquid thicker. Use boil over for liquid that escapes a pan or emotion that becomes uncontrollable. Use boil away when liquid gradually disappears as it boils.
The report boils down to a simple choice.
Why it works: Boils down means that the report can be reduced to its most important point.
4 more examples
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Simmer the tomatoes until the sauce boils down.
Here the liquid becomes less as it cooks.
Not this:Simmer the tomatoes until the sauce
warms through. What changes: The sauce gets hot, but the sentence does not say that its volume decreases. -
Milk can boil over if the heat is too high.
The milk rises and escapes from the pan.
Not this:Milk can
bubble gentlyif the heat is low. What changes: Gentle bubbles do not necessarily mean that liquid escapes. -
His frustration boiled over during the call.
The phrase uses the image of overflowing liquid for an emotion that becomes hard to control.
Not this:His frustration
grewduring the call. What changes: Grew shows an increase, but it does not say that the feeling passed a limit. -
Check the pan before all the water boils away.
Boils away means that the water gradually disappears as steam.
Not this:Check the pan before the water
cools down. What changes: Cooling changes temperature, while boiling away changes the amount of liquid.
Read the full guide
The particle after boil carries much of the meaning. Down suggests reduction, over suggests going past a limit, and away suggests gradual disappearance. Read the whole situation before choosing a phrasal verb.
Choose the meaning before the particle
Phrasal verbs combine a verb with a short word such as down, over, or away. The combination can have a meaning that is wider than the verb boil alone. Read the situation first.
The report boils down to a simple choice.
No cooking is happening here. Boils down means reduce an idea to its main point.
Is this sentence about a pan or an idea?
It is about an idea.
Use boil down for reduction
Use boil down to when a longer matter can be reduced to one result. In cooking, boil something down means cook it so that some liquid evaporates and the mixture becomes more concentrated.
The final decision boils down to cost.
The phrase points to the one factor that decides the situation.
Which phrase fits a sauce with less liquid after cooking: boil it down or boil it over?
Use boil it down.
Use boil over when something passes a limit
A pan boils over when its contents rise above the edge. The same phrasal verb can describe anger, tension, or conflict that becomes difficult to contain. Context shows whether the meaning is literal or figurative.
The soup boiled over onto the stove.
The soup goes beyond the edge of the pan.
What does boil over suggest about a feeling?
The feeling has become too strong to control calmly.
Use boil away for disappearing liquid
Boil away focuses on what happens over time. Liquid becomes steam and gradually disappears. Use it when the amount of liquid, rather than a sudden spill, matters in the sentence.
The broth boiled away while the phone rang.
The broth is no longer in the pan because it evaporated.
Does boil away describe a sudden overflow or gradual loss?
It describes gradual loss.
Keep literal and figurative uses separate
Words around the phrasal verb usually make the meaning clear. Sauce, water, and a pan point to cooking. A report, decision, anger, or disagreement points to an abstract meaning.
Their disagreement boiled over after weeks of small arguments.
Disagreement cannot leave a pan, so boil over is figurative here.
Which nearby noun helps you read boil down figuratively: stock or decision?
Decision points to the figurative meaning.
Before you go
Remember this
Choose the particle by meaning. Down reduces, over passes a limit, and away describes liquid that gradually disappears. Check whether the sentence is about cooking, information, or emotion before you decide.
Practice with the written examples
You can practice with the written questions in the Learn tab. Each answer includes an explanation.
Try the written questionsListening test not available yet
This lesson does not have the recordings needed for a listening test. Use the written questions in the guide to check your understanding.
Try the written questionsQuestions about "Phrasal verbs with boil: meanings and examples"
What does boil down mean?
Boil down usually means reduce something to its most important point. The report boils down to a simple choice means that one choice is the main issue. In cooking, boil a sauce down means cook it until some liquid evaporates and the sauce becomes more concentrated.
The report boils down to a simple choice.
What is the difference between boil down and boil away?
Boil down focuses on reducing information or reducing a liquid to make it more concentrated. Boil away focuses on liquid that gradually disappears as steam. Simmer the tomatoes until the sauce boils down describes reduction. Check the pan before all the water boils away describes disappearance.
The report describes the choice in detail.
Can boil over describe an emotion?
Yes. Boil over can describe anger, frustration, or conflict that becomes too strong to control. His frustration boiled over during the call means that he could no longer contain the feeling. The same phrase can literally describe milk that escapes from a pan.
Simmer the tomatoes until the sauce boils down.
How do I use boil down to in a sentence?
Use boil down to before the main result or issue. The final decision boils down to cost means that cost is the deciding factor. This use is common when a speaker summarizes a complex problem, argument, report, or decision in a few essential words.
Simmer the tomatoes until the sauce warms through.
Is boil away the same as boil over?
No. Boil away means that liquid gradually disappears because it keeps boiling. Boil over means that liquid rises and spills out of a container. The broth boiled away while the phone rang describes evaporation, while Milk can boil over if the heat is too high describes a spill.
Milk can boil over if the heat is too high.