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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
what froze
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "what froze" is correct and usable in written English. You can use it when asking for clarification about something that has become frozen or when discussing a situation involving freezing. An example could be: "I don't understand what froze during the night." Alternative expressions include "what became frozen" and "what is frozen."
✓ Grammatically correct
News & Media
Science
Wiki
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
1 human-written examples
JACKSONVILLE, Ore .— They say economic collapse is what froze this place in time, a gold rush relic all but abandoned when the railroad passed it by.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
59 human-written examples
"We can't seem to solve what freezes us at the start of the game.
News & Media
Some suggest that it is preferable to just equip your child with a credit card ― something that never goes out of style ― and let her buy what she needs once she has experienced what freezing really feels like.
News & Media
Dozens of young women have reached out to me for advice since, and I've finally been able to do the one thing no one could do for me: give an honest perspective about what freezing your eggs at 28 means, and what sometimes goes wrong.
News & Media
What freezes the osteoma bone growth and the process of bone formation?
"That's what Freeze Frame begs – to take a good look.
News & Media
What freeze-dried fantasy could possibly be unlocked from pouches of flavoured powder laced with mystery veg confetti?
News & Media
She imagines that what she feels is like what a freezing person experiences, recollecting the snow: "First — Chill — then Stupor — then the letting go".
News & Media
That deep hurt is more overtly present in the title track, a reflection on the cruel vicissitudes of showbiz which finds him exulting, "Today I took back what was stolen, and gave new life to what was frozen".
News & Media
Weather Eye: what is freezing fog?
News & Media
What does freezing the settlements entail?
News & Media
Expert writing Tips
Best practice
Apply the phrase metaphorically to describe economic stagnation, computer glitches or social paralysis as seen in authoritative news reporting.
Common error
Avoid using "froze" as a participle in passive constructions. For instance, do not write "what was froze"; instead, use "<a href="/s/what+was+frozen" target="_blank" rel="alternative">what was frozen" to maintain correct grammatical standards.
Source & Trust
92%
Authority and reliability
4.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase ""what froze"" typically functions as a nominal relative clause, where it acts as either the subject or the object of a sentence. According to Ludwig AI, it is most commonly used to identify the specific item or situation that underwent a change in state. It consists of the relative pronoun "what" and the past simple verb "froze".
Frequent in
News & Media
65%
Science
15%
Wiki
10%
Less common in
Encyclopedias
5%
Formal & Business
3%
Social Media
2%
Ludwig's WRAP-UP
In summary, ""what froze"" is a correct and versatile English phrase used to describe both the physical process of freezing and metaphorical instances of paralysis. While Ludwig AI notes that the exact match appears relatively infrequently compared to its passive counterpart "what was frozen", it is a staple of high-quality journalism. It is used by authors at The New York Times and The Guardian to evoke imagery of time being stopped by economic collapse or mechanical systems failing in the cold. Writers should ensure they use the past simple "froze" for active descriptions and avoid mixing it with auxiliary verbs that require the past participle "frozen".
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
what became frozen
Emphasizes the transition into a frozen state
what had frozen
Uses the past perfect tense to indicate an action completed before another point in the past
what was frozen
Describes a past state of being rather than the action of freezing
the thing that froze
Provides a more explicit noun-based structure
that which froze
A more formal or literary way to refer to the subject
what is frozen
Shifts the focus to the current present state
what solidified
Uses a more technical or scientific verb for phase change
what locked up
An idiomatic expression often used for mechanical or computer systems
the cause of the freeze
Identifies the underlying reason for the freezing event
what chilled
A weaker verb describing a drop in temperature without necessarily freezing
FAQs
How do I use "what froze" in a sentence?
You can use it as a subject or object clause, such as: "The investigators are trying to determine <a href="/s/what+froze" target="_blank" rel="alternative">what froze the pipeline during the blizzard."
What can I say instead of "what froze"?
Depending on the nuance, you might use "<a href="/s/what+solidified" target="_blank" rel="alternative">what solidified", "<a href="/s/what+became+frozen" target="_blank" rel="alternative">what became frozen" or "<a href="/s/what+halted" target="_blank" rel="alternative">what halted" for metaphorical contexts.
Is it correct to say "what was froze"?
No, "froze" is the past simple form. If you are using the auxiliary verb "was", you should use the past participle "<a href="/s/frozen" target="_blank" rel="alternative">frozen".
What is the difference between "what froze" and "what is freezing"?
""what froze"" refers to an event that happened in the past, while "<a href="/s/what+is+freezing" target="_blank" rel="alternative">what is freezing" describes an ongoing process in the present.
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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
92%
Authority and reliability
4.8/5
Expert rating
Real-world application tested