stick-to-it-ivenessstick-to-it-ive‧ness /stɪk ˈtuː ɪtəvnəs/ noun [uncountable] 
American English informal the ability to continue doing something that is difficult or tiring SYN stickability British English
American English informal the ability to continue doing something that is difficult or tiring SYN stickability British English- hearteningly
- heart failure
- heartfelt
- hearth
- heartily
- heartiness
- heartland
- heartless
- heartlessly
- heartlessness
- heart-lung machine
- Heart of Darkness
- Heart of England
- heartrending
- heart-searching
- heart-stopping
- heartstrings
- heartthrob
- heart-to-heart
- heartwarming
- heartwarmingly
- hearty
- heat
- heated
- heatedly