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
is firmly bound
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "is firmly bound" is correct and usable in written English.
It can be used to describe something that is securely tied or attached, often in a metaphorical sense as well. Example: "The contract is firmly bound by the terms agreed upon by both parties."
✓ Grammatically correct
Science
News & Media
Encyclopedias
Alternative expressions(5)
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
7 human-written examples
We consider that, although the same protein is concerned in all three compounds, yet the chemical evidence indicates that in indicator yellow, retinene is firmly bound while in neutral bleached rhodopsin solutions it is only weakly bound.
Science & Research
A cofactor that is firmly bound to the apoenzyme and cannot be removed without denaturing the latter is termed a prosthetic group; most such groups contain an atom of metal such as copper or iron.
Encyclopedias
TPT is firmly bound to DNA during all the simulation by means of stacking interactions with −1/+1 DNA base pairs and by direct and water mediated hydrogen bonds with the protein.
Science
Zn concentrations in the bone samples were the same in both groups of patients with OA and KI, probably because Zn is firmly bound to bone and is not easily released in the case of a negative Zn balance.
Despite the fact that the lipid aldehyde BY-POVPE is firmly bound to LDL and albumin, it is released from these carriers to the phospholipids and proteins of the cell plasma membrane suggesting high reversibility of Schiff base formation.
We found that the mean IF nuclei intensity did not change in response to SAHA treatment or following in situ cell extraction indicating that endogenous TRIM24 is firmly bound to chromatin under physiological conditions (i.e., present in the non-soluble nuclear fraction of cells).
Science
Human-verified similar examples from authoritative sources
Similar Expressions
53 human-written examples
It was shown by release tests that the coordinated BDNF was firmly bound to the Zn II -chelated HAc for more than 12 days.
Science
Actually, that is a good description of how Lib Dems used to behave: now they are firmly bound to painful cuts and other policies in their coalition agreement.
News & Media
"Know all Men by these Presents," begins the legal boilerplate of the St . Louisfree negro bond affidavits, "that we, Moses Dickson as principal, and John How as security, are firmly bound" for the "full sum of five hundred dollars".
News & Media
Their initial efforts, in which they used a technique called liquid-liquid countercurrent distribution, failed to give them adequate separation; they conceived, therefore, of an alternative method, in which one liquid was firmly bound to a finely granulated solid packed in a glass tube and a second liquid, immiscible with the first, was percolated through it.
Encyclopedias
Advocates also laud the school choice charters provide, saying that a child's education should not be firmly bound to the quality of schools located in his or her neighborhood.
News & Media
Expert writing Tips
Best practice
Use "is firmly bound" when you want to emphasize a strong and stable connection or commitment between two or more things. For example, you could say "the success of the project is firmly bound to the cooperation of all team members."
Common error
Avoid using "is firmly bound" in every sentence where you want to show a connection. Overuse can make your writing sound repetitive. Instead, vary your language with synonyms like "is closely tied", "is strongly linked", or "is securely attached".
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "is firmly bound" functions as a linking verb phrase, connecting a subject with a predicate adjective. It describes the state of being securely or strongly connected. As Ludwig AI suggests, this phrase is usable and correct.
Frequent in
Science
40%
News & Media
30%
Encyclopedias
10%
Less common in
Formal & Business
5%
Academia
5%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "is firmly bound" is a grammatically correct expression used to convey a strong and stable connection or commitment. While not exceedingly common, it finds its place primarily in scientific, news, and encyclopedic contexts. Ludwig AI confirms its usability in formal contexts. When using "is firmly bound", writers should aim to highlight a robust association between entities, keeping in mind its slightly formal tone and ensuring it isn't overused to maintain writing clarity and variety. Alternatives like "is securely attached", "is strongly linked" or "is closely tied" may be considered to avoid repetition.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
is securely attached
Focuses on physical connection and stability.
is tightly connected
Emphasizes a close relationship or linkage.
is strongly linked
Highlights a robust association or correlation.
is closely tied
Implies a dependent or integral relationship.
is inextricably linked
Suggests an unbreakable or inseparable connection.
is obligated
Shifts the meaning towards a sense of duty or requirement.
is committed
Highlights dedication and adherence to something.
is anchored
Implies stability and resistance to change.
is moored
Similar to anchored, suggesting a fixed position or allegiance.
is tethered
Suggests a constrained or limited freedom due to the connection.
FAQs
How can I use "is firmly bound" in a sentence?
The phrase "is firmly bound" can be used to describe a strong connection or commitment. For instance, "The success of this venture "is firmly bound" to the quality of its leadership".
What's a more formal way to say "is firmly bound"?
In formal contexts, you could use phrases like "is inextricably linked" or "is strongly correlated" instead of "is firmly bound".
Are there any synonyms for "is firmly bound" that imply a legal obligation?
Yes, phrases like "is contractually obligated" or "is legally bound" convey a similar sense of commitment with a specific legal implication, depending on the context.
How does "is firmly bound" differ from "is loosely connected"?
"Is firmly bound" implies a strong, stable, and often essential connection, while "is loosely connected" suggests a weak, casual, and potentially non-essential relationship.
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
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested