No. There is no word in English that cannot start a sentence.
It is very improper to talk with your mouth full.I would not want to set an improper example.
Understand the definition - improper means not proper. Then make a sentence When that kid sneezed, it was improper of him to not cover his mouth
You can just about use any word possible to start a sentence
I hope this is not an improper answer. Is this suit improper for the dance? Was the response improper?
Always start the beginning of a sentence with a capital letter.
this is not an improper sentence.
It was quite improper for you to ask such a question.
No, it's not improper.
The subject is improper for this forum. I got a citation for my improper left turn into oncoming traffic.
Here are 3 examples:The book is improper for him.This movie is improper for the children.Why did you let her see this improper show?
It is very improper to talk with your mouth full.I would not want to set an improper example.
can you start a sentence using the word phishing?
Well, it's really sort of difficult to explain.
You can, but it is considered improper grammar. Teachers don't like it when you do.
Improper use of your personal data is an invasion of privacy
no!
No, you cannot start a sentence with "no" unless you need to do so. No reason exists not to start a sentence with that word, as you can see. No one will care if you do start a sentence with it.