Discover the meaning , origin of TBD and learn how to use it effectively in conversations and event planning. TBD stands for "To Be Determined" and is used to indicate that something is still undecided or pending. Learn how to use TBD in various contexts, such as business, event planning, sports, and personal communication, with helpful examples and tips. Definition of TBD abbreviation in Oxford Advanced Learner's Dictionary. Meaning , pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. TBD is a written abbreviation for to be decided or to be determined, used when something has not yet been decided or is not yet known. See examples, synonyms, and translations of TBD in different languages.