well-founded/ill-mannered/ll-timed/well-read/ill-tempered/ill-natured/well-disposed/

[vil]

Dear teachers,

Would you be kind enough to share with me your opinion concerning the plausibility of the following sentences?

His suspicious were well-founded.
He is ill-mannered.
It was an ill-advised act.
It was an ill-timed remark.
She is well-read in Russian literature.
He is ill-tempered.
He is ill-natured.
WE learned about it from well-informed persons.
She was well-disposed to us.
He got a well-earned leave.
The remark was well-meant.

Thank you for your efforts.

Regards,

V.

[Anglika]

They all look fine.