HEART

(BRAVERY) [noun] [U] - bravery or determination or hopeYou're doing really well - don't lose heart now.Take heart - things can only get better.Emily took heart from her tutor's praise and wrote another story.When Sally asked me to look after her pet mouse, I didn't have the heart to refuse (= I could not refuse because I felt that would be unkind).She's one of those people who puts heart and soul into (= puts a lot of effort into) their work. [T]