upkeep /ˈʌpkip/noun 1verb 1forms 4 noun1 •Maintenance; the act or effort of keeping something in good and working condition.I would enjoy having a swimming pool, but I don't want to deal with the upkeep. verb1 •(UK) To maintain (something) or keep it in good repair.Do you know how to upkeep a boat? formsupkeeped · upkept · upkeeping · upkeeps