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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
perk up
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "perk up" is correct and usable in written English.
It is typically used to describe someone becoming more alert, lively, or cheerful, often after feeling tired or down. Example: "After a cup of coffee, I always feel like I can perk up and tackle the day ahead."
✓ Grammatically correct
News & Media
Wiki
Academia
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
60 human-written examples
People perk up.
News & Media
We perk up.
News & Media
That would perk up farmers.
News & Media
Parmesan's ears perk up.
News & Media
Maybe things will perk up".
News & Media
Things perk up after that, though.
News & Media
If you answered (b), perk up.
News & Media
Swansea, meanwhile, need to perk up fast.
News & Media
Need to perk up for a meeting?
News & Media
But let's assume it doesn't perk up.
News & Media
(Roses to relax, oranges to perk up).
News & Media
Expert writing Tips
Best practice
Use "perk up" to describe a quick and noticeable improvement in mood, energy, or condition. It's ideal for situations where someone or something becomes more lively or alert in a short period.
Common error
While "perk up" is versatile, avoid overusing it in highly formal or professional writing where more sophisticated alternatives might be appropriate. For instance, use "improve" or "recover" in formal reports.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrasal verb "perk up" primarily functions as an intransitive verb, describing an action performed by the subject. As Ludwig AI confirms, it indicates becoming more lively, enthusiastic, or upright, often after a period of being tired or down.
Frequent in
News & Media
59%
Wiki
23%
Academia
8%
Less common in
Formal & Business
4%
Reference
3%
Science
3%
Ludwig's WRAP-UP
In summary, "perk up" is a versatile phrasal verb used to describe becoming more lively, enthusiastic, or upright. As Ludwig AI states, it's grammatically correct and widely applicable, though slightly informal for highly formal contexts. With a high frequency in News & Media and Wiki sources, its use is prevalent in general writing. To ensure clarity and appropriateness, consider using synonyms like "become more animated" or "gain energy" based on context. Avoid overusing "perk up" in formal contexts where more sophisticated language may be needed.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
become more animated
Emphasizes the increase in liveliness and expressiveness.
gain energy
Focuses specifically on the increase in physical or mental energy.
become more cheerful
Highlights the improvement in mood and disposition.
recover vitality
Suggests a return to a state of being lively and strong.
look alive
An imperative suggesting someone should appear more alert and energetic.
enliven oneself
Refers to the action of making oneself more lively or animated.
show enthusiasm
Highlights the display of excitement and eagerness.
lift one's spirits
Focuses on improving one's mood or emotional state.
bounce back
Implies recovery from a setback or period of low energy.
cheer up
Simple and direct way to express becoming happier or more optimistic. Consider that "cheer up" is often used as an imperative.
FAQs
How can I use "perk up" in a sentence?
What are some synonyms for "perk up"?
Alternatives to "perk up" include "become more animated", "gain energy", or "become more cheerful", depending on the specific context.
Is it appropriate to use "perk up" in formal writing?
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested