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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
must've
Grammar usage guide and real-world examplesUSAGE SUMMARY
'must've' is a correct and usable contraction in written English
'Must've' is the contraction of "must have" and is used to indicate that something must have happened or must have been done in the past. Example sentence: I must've left my keys in the car.
✓ Grammatically correct
News & Media
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
59 human-written examples
They must've......
News & Media
"Must've been".
News & Media
I must've... dozed off.
News & Media
"The cheering must've helped.
News & Media
The wind must've changed.
News & Media
I must've sounded glum.
News & Media
He must've been hot.
News & Media
This must've been 1996.
News & Media
There must've been some.
News & Media
Anyway, I must've forgotten, and my tail must've gone up, and someone must've seen it.
News & Media
"You must've spent a fortune".
News & Media
Expert writing Tips
Best practice
Use "must've" in informal writing and speech to maintain a conversational tone. In formal contexts, prefer the full form "must have".
Common error
Avoid writing "must of", which is a common misspelling. The correct form is always "must've" (must have).
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The primary grammatical function of the contraction "must've" is to act as a modal auxiliary verb expressing a strong inference or deduction about a past event. Ludwig provides numerous examples illustrating its use in various contexts.
Frequent in
News & Media
75%
Science
10%
Formal & Business
5%
Less common in
Academia
3%
Encyclopedias
2%
Wiki
1%
Ludwig's WRAP-UP
In summary, "must've" is a common contraction of "must have" used to express a strong inference about something in the past. Ludwig AI confirms its grammatical correctness and prevalence, particularly in informal contexts like news and media. While acceptable, it's advisable to use the full form "must have" in formal writing. Remember to avoid the common misspelling "must of". As Ludwig showcases, this contraction is a versatile tool for expressing certainty in everyday language.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
must have
This is the full form of the contraction, suitable for more formal writing.
it is likely that
This phrase expresses a similar level of probability but is more formal and less direct.
it's probable that
Similar to "it is likely that", but uses a contraction to maintain a slightly less formal tone.
it seems that
Indicates an assumption based on available evidence, implying a degree of uncertainty.
it would seem that
A more tentative version of "it seems that", suggesting a weaker level of confidence.
one can assume that
This phrase suggests a logical inference based on certain premises.
presumably
A single-word adverb that conveys a similar meaning with greater conciseness.
it's reasonable to assume
Suggests that the assumption is based on logical reasoning and available facts.
no doubt
Implies a strong belief that something happened, often used rhetorically.
I imagine
This expresses a personal belief or assumption about what happened.
FAQs
When is it appropriate to use "must've"?
"Must've" is appropriate in informal writing and spoken English. For formal contexts, it's best to use the full form "must have".
What does "must've" mean?
"Must've" is a contraction of "must have". It indicates a strong belief or deduction about something that has happened in the past. For example, "He must've been tired after the long trip".
What are some alternatives to "must've"?
Alternatives include "must have", "it is likely that", or "it seems that", depending on the desired level of formality.
Is "must of" the same as "must've"?
No, "must of" is an incorrect form. The correct contraction is "must've", which is short for "must have".
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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
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested