The crossword solution for the term 'opposite of hard' is 'SOFT, ' which is a four-letter word. SOFT is a descriptive adjective that is used to describe something that is not hard or rigid. It can also be used to describe something that is gentle, delicate, or yielding. SOFT is often used to describe fabrics, such as cotton or velvet, and can also be used to describe sounds, such as a whisper or a lullaby.