The term SATISFY COMPLETELY can be broken down into two crossword solutions: SATIATE (7 letters) and SATE (4 letters). SATIATE is derived from the Latin word satiare, which means to fill or satisfy. It is often used to describe the feeling of being completely full after eating a large meal. SATE is a verb meaning to satisfy or gratify fully. It is related to the word SATIATE, but is more often used to describe a feeling of satisfaction or contentment.