full synonyms, full pronunciation, full translation, English dictionary definition of full. (of a container or a space) holding or containing as much as possible or a lot: 2. If your glass is full of root beer, it's up the brim — no more root beer will fit inside it. FULL definition: completely filled; containing all that can be held; filled to utmost capacity. com. The ceremony will air on March 15. full·er , full·est 1. Learn more. Find 219 different ways to say FULL, along with antonyms, related words, and example sentences at Thesaurus. Clothing (of garments, drapery, etc.