Silence

2nd-level illusion (ritual)
Casting time: 1 action
Range: 120 feet
Target: 20-foot-radius sphere within range
Components: V S
Duration: Concentration, up to 10 minutes
Classes: Bard, Cleric, Ranger
Subclasses: Sorcerer (Divine Soul), Warlock (The Fathomless), Warlock (The Raven Queen), Warlock (The Undying), Wizard (Theurgy)

For the duration, no sound can be created within or pass through a 20-foot-radius sphere centered on a point you choose within range. Any creature or object entirely inside the sphere is immune to thunder damage, and creatures are deafened while entirely inside it. Casting a spell that includes a verbal component is impossible there.