From Longman Dictionary of Contemporary Englishbe (deeply/greatly) indebted to somebodybe (deeply/greatly) indebted to somebodyTHANKto be very grateful to someone for the help they have given you We are deeply indebted to Dr Allen. → indebted
Examples from the Corpus
be (deeply/greatly) indebted to somebody• Mr Berlusconi is indebted to bankers as well as to politicians.• In contrast, Pollock's student drawings after El Greco are indebted to Cézanne.• I am deeply indebted to Henry Rosemont, who gave a great deal of assistance in the final revisions of the manuscript.• The Dark Blues were indebted to Jason Pratt, 21, who was named man of the match.• I am indebted to my correspondent Mrs D. M. Ross for this compelling tale.• The blood transfusion brought colour to my face and I am deeply indebted to some anonymous donor.• For further information, we are indebted to Vaughan Purvis who was not supposed to be in this festival at all. 