Ai Feedback
The phrase "his weakness" is correct and usable in written English.
You can use it to describe any shortcoming a person may have, for example: "John is charismatic and intelligent, but his weakness is communication skills."
Exact(60)
Clubbing was his weakness.
Mozzarella is his weakness.
He may regret his weakness.
"It shows his weakness.
It's his strength and his weakness.
Paraguayans appreciated his weakness for horse racing.
His weakness has been rebounding.
His strength became his weakness".
His weakness was – is – women.
Pablo's son was his weakness.
"That's his key strength and his weakness.
Write better and faster with AI suggestions while staying true to your unique style.
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