The term 'BE STILL' can be expressed in several ways, as evidenced by the crossword solutions SHH (3 letters), REST (4 letters), HUSH (4 letters), YET (3 letters), SSH (3 letters), and SHUSH (5 letters). The term is often used to indicate that someone should remain quiet or calm. SHH, REST, HUSH, SSH, and SHUSH are all variations of the same idea, while YET implies that the person should remain still despite any other activity going on around them.