1. (

• sibilate ,

) pronounce with an initial sibilant ;

2. (

• sibilate ,

) utter a sibilant ;

3. (

• hiss ,
• sizz ,
• siss ,
• sibilate ,

) express or utter with a hiss ;

4. (

• hiss ,
• siss ,
• sizz ,
• sibilate

) make a sharp hissing sound, as if to show disapproval ;