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Discover LudwigSuggestions(5)
The word "certain" is correct and can be used in written English
It can be used as an adjective to describe something or someone that is known without any doubt, or as an adverb to imply certainty about an action or statement. For example: "I am certain that I left my wallet in the house."
Exact(60)
"I am certain — certain!
Almost certain.
how certain.
"Absolutely certain".
Nothing's certain.
Not certain.
I'm certain.
"Certain people expect certain prices".
Certain handwriting characteristics indicate certain personality traits.
Certain churches were restored under certain regimes.
They throw certain pitches in certain counts.
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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