Used and loved by millions
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
bolster up
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "bolster up" is correct and usable in written English.
It can be used when referring to strengthening or supporting something, such as an argument, position, or emotional state. Example: "To bolster up her confidence before the presentation, she practiced her speech multiple times."
✓ Grammatically correct
News & Media
Science
Formal & Business
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
16 human-written examples
If you're nervous, it's tempting to bolster up some Dutch courage by piling up the drinks.
News & Media
A serious young friend of ours has decided to give his life in an attempt to bolster up our confidence.
News & Media
He also writes that "the consciousness of being in the right can bolster up morale, though this affects the civilian population more than the troops".
News & Media
Jack L. Warner, busiest of the Brothers, is genially inclined to bolster up the courage of those who are ready to throw in the towel.
News & Media
History teaching before 1994 was there to "bolster up Afrikaner nationalism, and black South Africans were merely the objects of history.
News & Media
A week after the country drew widespread condemnation for a nuclear test Kim "set forth the important tasks to be fulfilled to bolster up the nuclear force," the official KCNA state news agency said.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
42 human-written examples
"We would not rule out a new form of nuclear test for bolstering up our nuclear deterrence," it said in March.
News & Media
Weinberg & the other dupes on the McKesson & Robbins board might have been sued for negligence, but they avoided litigation by voluntarily bolstering up the company with a gift of $600,000, of which Weinberg provided around $75,000.
News & Media
But his policy of bolstering up the Turkish Empire was supported neither by the entire Cabinet nor by public opinion, and the government, badly shaken, had to reverse its policy.
Encyclopedias
You could have understood a shoddy director dragging them in to gloss over his technical deficiencies, but there are no technical deficiencies about Stanley Kubrick and his film is far too good to need bolstering up with such repellent shock tactics".
News & Media
"It is nobody's secret that the U.S. and South Korean puppet regime are massively bolstering up cyberforces in a bid to intensify the subversive activities and sabotages against the DPRK," the North's Korean Central News Agency said, using the acronym of the country's official name, Democratic People's Republic of Korea.
News & Media
Expert writing Tips
Best practice
When using "bolster up", ensure the context clearly indicates what is being strengthened or supported. This phrase is effective when emphasizing the act of reinforcing something that is already present but needs additional support.
Common error
Avoid using "bolster up" when a simpler verb like "bolster" or "strengthen" suffices. The addition of "up" can sometimes be redundant and dilute the impact of your writing.
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "bolster up" primarily functions as a phrasal verb, which involves combining the verb 'bolster' with the particle 'up'. According to Ludwig AI, it signifies the action of strengthening or reinforcing something. As showcased in Ludwig's examples, it commonly refers to supporting arguments, confidence, or systems.
Frequent in
News & Media
50%
Science
25%
Formal & Business
25%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "bolster up" is a phrasal verb that functions to strengthen or reinforce something. Ludwig AI confirms that it is grammatically correct and usable in written English. It appears most frequently in News & Media, with a less presence in Science and Formal & Business contexts. Alternatives include "strengthen", "reinforce", and "support". Remember to use "bolster up" when you want to emphasize the act of adding extra support to something already present, and be mindful of potential redundancy by overusing "up".
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
reinforce
Focuses on strengthening something that already exists.
strengthen
Emphasizes making something more robust or resilient.
support
Highlights providing assistance or backing to something.
fortify
Suggests making something more resistant to attack or weakening.
shore up
Implies adding support to prevent collapse or failure.
build up
Indicates a gradual increase in strength or size.
buttress
Highlights providing external support, often in an architectural sense, but applicable figuratively.
bolster
Uses the root verb without the particle 'up', offering a more concise alternative.
prop up
Suggests providing temporary support to prevent something from falling.
sustain
Focuses on maintaining something over time.
FAQs
How can I use "bolster up" in a sentence?
You can use "bolster up" when you want to describe the act of strengthening or supporting something. For instance, "To bolster up his argument, he presented additional evidence".
What's the difference between "bolster up" and "strengthen"?
"Bolster up" and "strengthen" are similar, but "bolster up" implies adding extra support to something already existing, whereas "strengthen" is a more general term for making something stronger.
Are there any formal alternatives to "bolster up"?
Is it always necessary to use "up" after "bolster"?
No, the "up" is not always necessary. Using just "bolster" is often sufficient and can make your writing more concise. "Bolster" and "bolster up" are often interchangeable, though "bolster up" can sometimes emphasize a more active or additive process.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested