Main Indubitably Takeaways:
- Indubitably is an adverb that means there is no doubt something is true, or that something is impossible to doubt.
- It’s similar to undoubtedly and doubtless, but is much more certain.
- It’s best for formal or academic settings. It can seem pretentious.
- If you want the adjective version, use indubitable.
- It is an old-fashioned word with Latin origins and has been around since the 15th century.
If you’re 100% convinced that something is true, indubitably is an elegant way to say there’s no doubt in your mind.
What Does Indubitably Mean in a Sentence?
Indubitably means that something is impossible to doubt or unquestionable. It indicates a stronger degree of certainty versus similar words like undoubtedly. Basically, it’s a very formal way to say “no doubt.” This adverb comes from the Latin word dubitabilis, which means doubtful. Combined with the prefix -in, it means without a doubt. Only use this word when you are convinced that something is 100% true. It can be used as a response to question.
How do you use the Word Indubitably?
Indubitably Sentence Examples:
Chris: You will join us for the Opera next month, won’t you?
- Make sure you emphasize the ‘du,’ pronounced doo. It rhymes with boo or who.
When to use Indubitably
Because this isn’t a popular word, it’s best for professional conversations. Use it while speaking with your boss or meeting with a client. The word also works in academic settings.
Indubitably is not used often in everyday conversations. Instead, phrases like without a doubt are more common.
What’s more, it may seem pretentious or even sarcastic to use this very refined word in casual texts or emails.
In these informal situations, try something like certainly, unquestionable, or doubtless.
What is a Synonym for Indubitably?
Formal Synonyms for Indubitably:
Informal Synonyms for Indubitably:
- For sure
- No doubt
- One hundred percent true
- Without a doubt
Watch out! Why Doubtless and Undoubtedly Aren’t Perfect Synonyms
The difference is that the first two leave some room for doubt while indubitably leaves zero room for doubt.
For example, doubtless literally means without a doubt. But, in practice, you typically see this word used as a synonym for probably.
Conversely, undoubtedly also means without a doubt. Unlike doubtless, this adverb is stronger than probably. However, it’s still not as strong as indubitably.
These Words are Similar but are not 100% True:
None of these words is as strong as indubitably, though. Only choose indubitably if you need a word indicating you’re 100% convinced something is true.
Other Forms of Indubitably
indubitable: (adjective) undisputable; without a doubt
Words Similar to Indubitable
Are you Comfortable Using This Word? Test Your Skills With This Quick Quiz…
Indubitable Question #1
The answer is FALSE. Indubitable means without a doubt, impossible to doubt, or unquestionable.
Indubitably Question #2
The answer is D. Indubitably indicates the degree of certainty.
Indubitable Definition Question #3
The answer is B. Indubitable means impossible to doubt. Other synonyms for this word include indisputable, incontestable, undeniable, and certain.
Indubitably Question #4
The answer is FALSE. Indubitably is best for formal communication such as academic writing and work email.