Hissing is a type of vocalization that is produced by forcing air through a small opening in the mouth or nose. It is usually associated with animals, such as snakes, but can also be used to describe the sound of a person's voice. The crossword solutions for the term HISSING are DRONING (7 letters), BUZZ (4 letters), BUZZING (7 letters), WHISPERING (10 letters), and SIBILANT (8 letters). DRONING is a low, continuous humming sound, while BUZZ and BUZZING are both short, high-pitched sounds. WHISPERING is a soft, quiet sound made by speaking very quietly, and SIBILANT is a hissing sound made by forcing air through a narrow opening.