Related Clues:

• Like the opening letter of each of the four longest answers
• Energy corporation backed without comment?
• Saying nothing as is head of psychology, for example
• Remote's sound-stopping button
• Cut off the sound
• Dialogue-stopping button?
• Button you may click before a Zoom lecture
• "Sorry, I was on ___" (Zoom apology)
• "Volume off" button
• Remote's "silence" button
• 'You're on ___' (Zoom reminder)
• Spades I loaned mum
• Shut up, as an annoying talkshow host
• Subdue, as a color
• Like the "z" in "rendezvous"