Definitions

1. verb

to make a hissing sound, especially with the tongue between the teeth.

“The snake sibilated as it hissed at its rival.”

2. verb

to utter a soft hissing sound, especially with the lips.

“The actress sibilated the words in the dramatic monologue.”

3. noun

a hissing or whistling sound, especially one made by a snake or a piece of metal in friction with something else.

“The sibilate of the snake was loud and menacing.”