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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
had become invalid
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "had become invalid" is correct and usable in written English.
It can be used to indicate that something has lost its validity or effectiveness over time, often in a past context. Example: "The contract had become invalid after the deadline passed without any signatures."
✓ Grammatically correct
News & Media
Science
Academia
Alternative expressions(3)
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
2 human-written examples
Ms Atkins abruptly left the board of HealthSouth because it became clear that the unrolling scandal there meant that her Directors' and Officers' (D&O) liability insurance had become invalid.
News & Media
The United States had the sovereign power to purchase adjacent territory, and the objection to its incorporation, p339 if ever valid, had become invalid because of the Treaty of 1803.
Academia
Human-verified similar examples from authoritative sources
Similar Expressions
58 human-written examples
If one or more local constraints are violated, the global top-k set ({mathcal {T}}) may have become invalid.
Science
This pause prevents the congestion window from reacting to congestion losses or the number of dropped packets with a set of parameters which have become invalid on vertical handover.
However, in technically unsuccessful90Y radioembolization, we feel that retrospective tumor dose quantification by 90Y PET may be routinely indicated because the intended tumor doses by predictive dosimetry may have become invalid.
Science
With characteristic courage, he refused to cave in to increasingly poor health, and continued to read, write and teach even after he had become, in effect, a semi-invalid.
News & Media
His first marriage, to Hatheburg, daughter of Erwin, count of Merseburg, was declared invalid because she had become a nun after her first husband's death.
Encyclopedias
Eight justices said that Mr. Hamdi's detention had either been invalid from the beginning or had become so over time.
News & Media
Eight justices, all but Justice Clarence Thomas, said the two-year-long detention of an American citizen, Yaser Esam Hamdi, had either been invalid from the beginning or had become so, for constitutional or statutory reasons.
News & Media
She had become keeper of the keys to the White House and to the president himself, conveying her invalid husband's mumbled and cryptic answers while official Washington pleaded for her intervention on crucial issues.
News & Media
Vanda lives in one — but she's now a mother who is unable to raise her toddler, and she has become an invalid even as her addiction is being treated with methadone.
News & Media
Expert writing Tips
Best practice
Use the phrase "had become invalid" to clearly indicate that something previously valid is no longer so due to specific circumstances or the passage of time.
Common error
Avoid using "has become invalid" when referring to a past situation. Use "had become invalid" to maintain correct tense and indicate that the invalidation occurred before another point in the past.
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "had become invalid" functions as a past perfect construction indicating a state change. It signifies that something transitioned from being valid to invalid before a specified point in the past. Ludwig AI affirms its usability in written English.
Frequent in
News & Media
30%
Science
40%
Academia
10%
Less common in
Encyclopedias
5%
Wiki
5%
Formal & Business
10%
Ludwig's WRAP-UP
In summary, the phrase "had become invalid" is a grammatically sound and frequently used expression for indicating that something previously valid has lost its validity at a point in the past. Ludwig AI confirms its correctness and common usage. Its use spans across various formal contexts including news, science, and academic writing. When using this phrase, ensure correct tense and consider context to fully clarify the reason for invalidation. Related phrases such as "had become void" or "had lapsed" can be considered based on nuanced differences in meaning.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
had become void
Replaces 'invalid' with 'void', implying a lack of legal effect or enforceability.
had become null
Uses 'null' to mean having no legal or binding force, similar to 'void'.
had lost its validity
More explicitly states the loss of validity.
had ceased to be valid
A more formal way of saying something is no longer valid.
had lapsed
Focuses on the expiration or termination of something due to the passage of time or unmet conditions.
had been invalidated
Suggests an external action caused something to become invalid.
had expired
Specifically indicates that something's validity has ended due to reaching a time limit.
was no longer in effect
Indicates that a rule, law, or agreement is not currently operative.
had become ineffective
Shifts the focus to the lack of effectiveness rather than formal validity.
had become obsolete
Suggests that something is no longer useful or applicable due to being outdated.
FAQs
What does "had become invalid" mean?
The phrase "had become invalid" means that something that was once valid or effective is no longer so at a specific point in the past. It indicates a change in status from valid to invalid prior to a certain time.
When should I use "had become invalid" instead of "has become invalid"?
Use "had become invalid" when discussing a past situation where something's validity ended before another event in the past. Use "has become invalid" when describing a present situation or something that recently changed.
What are some alternatives to "had become invalid"?
Alternatives include "had become void", "had lapsed", or "had expired", depending on the context.
How does the context affect the meaning of "had become invalid"?
The context clarifies why something "had become invalid". For instance, a contract "had become invalid" because of unmet conditions, or a license "had become invalid" due to a policy change.
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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
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested