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
certain duties
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "certain duties" is correct and usable in written English.
It can be used to refer to specific responsibilities or tasks that are expected to be performed in a given context. Example: "As part of your role, you will be required to fulfill certain duties related to project management."
✓ Grammatically correct
News & Media
Science
Formal & Business
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
41 human-written examples
Has he been encouraged to relinquish certain duties?
News & Media
They are generally not allowed to perform certain duties, including reconnaissance, intelligence and data systems.
News & Media
While he delegated certain duties to lieutenants, Mr. Iger has been the guiding force.
News & Media
Their party and their country have asked them to accept certain duties and face certain problems, and they just get on with it.
News & Media
There may also be other salary additions such as a daily food allowance, heating costs and bonuses for performing certain duties.
News & Media
"The staff provided by the city for defendant is in exchange for her fulfilling certain duties as first lady," the judge said.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
17 human-written examples
The moment the Civil Defense authorities take over in an emergency; taxis will be used only for certain duties-transportation of key personnel; aid inevacuation & in delivery of messages.
News & Media
However, due to the lack of a unified algorithm of generating BIBDs, it is not always possible to generate an NDS with a certain duty cycle.
Different from the previous research, the previous optimization strategies choose to increase the energy efficiency of the node and optimize the network lifetime under a certain duty cycle.
Theorem 2 shows that the network lifetime can be maximized by non-equidistant deployment of nodes in a certain duty cycle.
First, the network lifetime at a certain duty cycle is optimized by non-equidistant deployment of nodes, and the distance between nodes is as Theorem 2. Theorem 2 For linear network under MQAM modulation technique, to minimize the maximum energy consumption is to calculate a set of d1, d2, d3, …, d n at duty cycle τ to satisfy the following equation.
Expert writing Tips
Best practice
When writing formally, clarify "certain duties" with examples to avoid ambiguity. For instance, instead of saying 'Employees must perform certain duties', specify 'Employees must perform certain duties such as data entry, customer service, and inventory management'.
Common error
Avoid using "certain duties" without providing context or clarification, as this can lead to confusion. Instead, always specify what those duties are or provide relevant examples.
Source & Trust
81%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "certain duties" functions as a noun phrase, typically serving as the object of a verb or preposition. Ludwig AI indicates its grammatical correctness. It refers to specific, though perhaps not explicitly stated, responsibilities or tasks.
Frequent in
News & Media
43%
Science
33%
Wiki
12%
Less common in
Formal & Business
8%
Encyclopedias
3%
Science & Research
1%
Ludwig's WRAP-UP
The phrase "certain duties" is a grammatically correct and frequently used noun phrase, as confirmed by Ludwig AI. It serves to reference specific responsibilities or obligations without detailing them explicitly. While versatile, it's important to ensure clarity by providing context or examples, particularly in formal communication. Alternatives like "specific responsibilities" or "particular obligations" can be used for enhanced precision. Using "certain duties" can maintain generality as long as the tasks are reasonably obvious within the defined scope or have already been properly described.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
specific responsibilities
Emphasizes the particular and defined nature of the duties.
particular obligations
Highlights the binding nature of the duties.
designated tasks
Focuses on the assignment or allocation of specific duties.
prescribed functions
Suggests duties are formally laid out or required.
assigned roles
Highlights the part someone plays and their corresponding duties.
defined roles
Focuses on clearly established or delimited positions.
required tasks
Stresses the mandatory aspect of the duties.
stipulated obligations
Implies the duties are agreed upon or specified in a contract.
mandated responsibilities
Highlights the authoritative or legal backing of the duties.
delegated assignments
Focuses on how the duties have been passed down from one person to another.
FAQs
How can I use "certain duties" in a sentence?
You can use "certain duties" to refer to specific responsibilities or tasks expected in a given context. For example: "As part of your role, you will be required to fulfill "certain duties" related to project management."
What are some alternatives to "certain duties"?
Alternatives include "specific responsibilities", "particular obligations", or "designated tasks", depending on the context.
Is it better to be specific instead of using "certain duties"?
While "certain duties" is grammatically correct, being specific enhances clarity. Instead of 'The role involves certain duties', specify 'The role involves managing budgets, overseeing staff, and ensuring compliance'.
When is it appropriate to use the term "certain duties"?
The phrase "certain duties" is appropriate when the context makes the specific tasks clear or when providing an exhaustive list is unnecessary. For instance, if a job description outlines tasks in detail, a summary might refer to fulfilling "certain duties" as described therein.
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
81%
Authority and reliability
4.5/5
Expert rating
Real-world application tested