From Longman Dictionary of Contemporary Englishgladdenglad‧den /ˈɡlædn/ verb [transitive] old-fashionedHAPPY to make someone feel pleased and happy It will gladden the hearts of my friends to see you.→ See Verb table
Examples from the Corpus
gladden• It gladdens me to see young people doing volunteer work.• Beth's smile in return gladdened the girl.• Come with us to enjoy Mount Usher whose lilies, poppies and peonies gladdened the heart of William Robinson.• But there are so many things to gladden the heart which take little time and no money.• It will gladden the hearts of my friends to see you.gladden ... hearts• It will gladden the hearts of my friends to see you. 