The term 'filled completely' can be described by two crossword solutions: SATED (5 letters) and SATIATED (8 letters). SATED is an adjective that means to be filled with food or drink to the point of satisfaction. SATIATED is a more intense version of the same word, meaning to be filled to the point of being overly full. Both words are used to describe a feeling of contentment after having consumed a large amount of food or drink.