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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
optional
Grammar usage guide and real-world examplesUSAGE SUMMARY
The word "optional" is correct and usable in written English.
You can use it to describe an activity, task, or requirement that you can choose not to do, or that is not necessary. For example, "The seminar offers an optional discussion session for attendees who would like to discuss the presentation topics in more detail."
✓ Grammatically correct
News & Media
Formal & Business
Science
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
60 human-written examples
Yet what it fails to acknowledge is the degree to which many alleged options are becoming less optional.
News & Media
Related: How a law degree could launch your career in politics For Samuel Feldman, a second-year law student at the London School of Economics, studying public international law as an optional module has helped him build useful contacts with experts in international law – from professors to practitioners.
News & Media
For years I worked at the BBC, making and presenting business programmes for TV and radio, and I was always asking "where are all the women?" The majority of interviewees are of the suit and tie variety: male, pale, stale (hair optional).
News & Media
lemon, dash of water Porridge 1 cup porridge oats, 2 cups water or milk (or a mixture of the two), pinch of salt or brown sugar, 1 tbsp acacia or runny honey (optional) Make the apple purée by slicing the apples into a small saucepan and adding the lemon juice and a dash of water.
News & Media
Homemade or not, I don't think frying the cheese is as optional as Toombs suggests – given that, in his words, it makes the paneer "melt in your mouth crispy on the outside and nice and warm in the centre", why wouldn't you?
News & Media
This has done little to mollify observers angry at a business that seems to treat tax as an optional inconvenience, and whose first response to the negative publicity was cut paid lunchbreaks, maternity benefits and sick leave from its already low-paid workforce.
News & Media
The optional nature of the card isn't made explicit in Forrest's review, which calls for it to be implemented for all Australians on welfare, apart from those who get the aged or veterans pension.
News & Media
The wordiness of Lincoln is hardly optional, as Tony Kushner's screenplay concentrates on the manoeuvring to get the Thirteenth Amendment, abolishing slavery, passed before the Confederate army surrendered – thereby killing the support of those who favoured the measure only as a way of ending the war.
News & Media
The personal information posted on your profile isn't very personal - every field is optional, and you can be as vague as you like (e.g. Location could be "UK" rather than "King's Cross, London").
News & Media
"Jérémy Mathieu will sign a contract with FC Barcelona for the next four seasons, plus an optional season more.
News & Media
(Makes 1 tray) 250g butter 300g walnut pieces 125g ground almonds 75g pistachio kernels, slivered Zest of 1 orange Generous pinch of salt (optional) 1tsp ground cardamom 12 sheets of filo pastry (2 x 270g packets) 250g granulated or caster sugar Juice of 1/2 lemon 1 tbsp orange-blossom water (or to taste) Melt the butter.
News & Media
Expert writing Tips
Best practice
Use "optional" when referring to elements that genuinely provide a choice, ensure users are aware of the implications of both choosing to engage, and choosing to not to.
Common error
Don't use "optional" when you mean "suggested" or "recommended". "Optional" means there's a choice to do something or not, while "suggested" implies it's beneficial but not mandatory. Being precise prevents misleading your audience.
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The word "optional" primarily functions as an adjective. According to Ludwig AI, it modifies nouns to indicate that something is not compulsory or is left to personal choice. Examples show it describing modules, features, and requirements.
Frequent in
News & Media
40%
Formal & Business
30%
Science
15%
Less common in
Academia
5%
Encyclopedias
5%
Wiki
5%
Ludwig's WRAP-UP
The word "optional" is a common adjective used to indicate that something is not compulsory. Ludwig AI confirms its correct grammatical standing. Its usage spans various contexts, including news, business, and science, with a neutral register. Alternatives include "not required" and "voluntary". Remember to use "optional" accurately, differentiating it from "suggested", and clarify defaults when describing "optional" features. Ensure its implications are understood, as providing accurate guidance is a key to effective communication.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
not required
Direct synonym, emphasizes the lack of obligation.
voluntary
Highlights the element of choice and willingness.
discretionary
Focuses on the freedom to decide based on one's own judgment.
elective
Commonly used in academic contexts, suggesting a choice among alternatives.
non-compulsory
Formal and direct negation of compulsory.
at your discretion
Emphasizes that the decision is up to the individual.
up to you
Informal way of indicating the choice is someone else's.
not obligatory
Formal synonym, stressing the absence of a binding requirement.
left to your choice
Highlights the element of personal selection.
permissive
Suggests that something is allowed but not enforced.
FAQs
How to use "optional" in a sentence?
You can use "optional" to describe something that is not required, such as "The training session has an "optional module" on advanced techniques".
What can I say instead of "optional"?
You can use alternatives like "not required", "voluntary", or "discretionary" depending on the context.
Which is correct, "optional" or "obligatory"?
"Optional" means something is not compulsory, while "obligatory" means it is required. They are antonyms.
What's the difference between "optional" and "suggested"?
"Optional" means something is not required and you have a choice, while "suggested" implies something is recommended but not mandatory.
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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
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested