Your English writing platform
Discover Ludwig"permanent marker" is correct and usable in written English.
You can use it when you want to refer to a type of marker that is not easily erased. For example, "I wrote my name on the cup with a permanent marker so no one would mistakenly take it."
Dictionary
permanent marker
noun
A type of felt-tip pen used to create permanent water-resistant writing on a surface such as a writable DVD
Exact(60)
The deposited prints were labeled using permanent marker.
With a permanent marker.
It was written in permanent marker".
So was I until I met my friend permanent marker.
But write the plan in pencil instead of permanent marker.
This isn't Jenner's first foray into permanent marker mischief.
Mice were marked at weaning using permanent marker.
Infiltration boarders were marked with a permanent marker.
Don't use permanent marker.
A permanent marker.
Get a permanent marker.
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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