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
once reliable
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "once reliable" is correct and usable in written English.
It can be used to describe something that was dependable in the past but may no longer be so. Example: "The old computer was once reliable, but now it frequently crashes."
✓ Grammatically correct
News & Media
Science
Formal & Business
Alternative expressions(2)
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
27 human-written examples
His defense, once reliable, has been suspect.
News & Media
ABs are managers and professionals, who were once reliable Tory voters; Cs are various laborers.
News & Media
To make matters worse, the once reliable Tim Cahill seems to have lost his touch.
News & Media
Republicans were once reliable partners in this kind of necessary spending.
News & Media
But a once reliable electricity grid is breaking down, forcing residents to set up noisy generators in their back gardens.
News & Media
But he is scoring largely against substitutes and rarely steps out to shoot one of his once reliable midrange jump shots.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
31 human-written examples
Trying its best to pick-up the slack, the catalog world of reissues and compilations--once reliable income generators--unfortunately has had to cut back on releases significantly.
News & Media
First, because contributions from once-reliable sources have dwindled.
News & Media
They are finding that the once-reliable sources of profit from traditional drugs are suddenly drying up.
News & Media
In corners of Vermont, once-reliable well-water supplies have become intermittent in recent years, with homeowners blaming local developers or mining operations or a bottling operation.
News & Media
There are a number of reasons this season has slipped away from the Mets: ill-timed hitting slumps, the collapse of a once-reliable bullpen.
News & Media
Expert writing Tips
Best practice
When using "once reliable", clearly state what has changed that makes the subject no longer reliable to provide context for the shift.
Common error
Avoid using "once reliable" without clarifying the current state. Failing to mention the change can confuse readers who might assume the subject is still dependable.
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "once reliable" functions as a pre-modifying adjective phrase, describing a noun by indicating that it possessed the quality of reliability at some point in the past. As confirmed by Ludwig AI, this structure is grammatically correct and suitable for a variety of contexts.
Frequent in
News & Media
82%
Science
12%
Formal & Business
6%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "once reliable" is a commonly used and grammatically sound expression that indicates a shift from a state of reliability to one where that quality is no longer present. As Ludwig AI confirms, it's suitable for various contexts, including news, science, and formal business settings. When using "once reliable", be sure to provide context for the change, avoid assuming ongoing reliability, and consider alternative phrases like "formerly dependable" or "previously trustworthy", as explained by Ludwig. Its primary function is to highlight this change, and its neutral register makes it a versatile choice for conveying this information effectively.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
formerly reliable
Similar to 'formerly dependable', but retains the original term for reliability.
formerly dependable
Emphasizes the past dependability with a formal tone, focusing on the shift in reliability.
previously dependable
Mirrors 'previously trustworthy' with the original term for dependability.
once dependable
A more straightforward way to express that something was dependable in the past.
previously trustworthy
Highlights the past trustworthiness, suitable when the emphasis is on integrity and honesty.
used to be dependable
A more straightforward and common way to express the past dependability.
reliable in the past
Highlights time frame, useful for indicating that something dependable in the past is not anymore.
in the past, reliable
Explicitly indicates the time frame when reliability was present.
what used to be reliable
Similar in usage but emphasizes more the current unreliability rather than the past dependability.
once a source of certainty
Broader, suggesting that the subject offered assurance or conviction in the past.
FAQs
How can I use "once reliable" in a sentence?
You can use "once reliable" to describe something that used to be dependable but isn't anymore. For example, "The old car was "once reliable", but now it needs frequent repairs."
What's a good alternative to "once reliable"?
Alternatives include "formerly dependable", "previously trustworthy", or "used to be dependable". The best choice depends on the specific context.
Is it always negative to say something was "once reliable"?
Generally, yes. Using "once reliable" implies a decline or change in dependability. It suggests that something that was previously a good source of support or trust is no longer so.
What makes something go from being reliable to "once reliable"?
Many factors can cause this shift, including age, damage, changing circumstances, or evolving standards. For instance, a "formerly dependable" internet provider may become less reliable due to increased user traffic or outdated infrastructure.
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
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested