0 to-do list to-do list [noun]a list of tasks that need to be done Example: It's on my to-do list. Longman Dictionary of Contemporary English to-ˈdo list noun [countable] a list of jobs you have to do Painting the bedroom is at the top of my to-do list. Cambridge Advanced Learner's Dictionary to-do list noun [ C ] UK US WORKPLACE a list of tasks that need to be done: It's on my to-do list. Merriam-Webster's Advanced Learner's Dictionary Merriam-Webster's Advanced Learner's Dictionary: to-do list noun Definition of to-do list : a list of things to doCalling the plumber is on my to-do list. American EnglishBritish EnglishworkplaceB2 (Upper-intermediate)noun