indebted

be indebted to a person for a large sum

I am in some sort indebted to you.

I am greatly indebted to you for your help.

a heavily indebted businessman was being pursued by creditors.

I am indebted to her for her help in indexing my book.

I'm indebted to all the staff who have been working so hard.

I am deeply indebted to all the doctors and nurses who treated me.