strongly
You use strongly when you are talking about people's feelings or attitudes. For example, if you strongly object to something, you object to it very much.
I feel very strongly that we have a duty to help.
Supporters of Green parties are usually strongly against nuclear power.
You can say that you strongly advise or strongly recommend something to mean that you believe very definitely that someone should do it, use it, etc.
I strongly advise you to get someone to help you.
I would strongly recommend a Vitamin B supplement.
Be careful
Don't use ‘strongly’ to describe the way someone holds something. Instead, use tightly or firmly.
Don't use ‘strongly’ to describe the way someone holds something. Instead, use tightly or firmly.
He gripped the railing tightly in his right hand.
He held her arm firmly.
Be careful
Don't say that a person works ‘strongly’. Say that they work hard.
Don't say that a person works ‘strongly’. Say that they work hard.
He had worked hard all his life.