Turn Off Voice Assistant on Apple Mac

VoiceOver, as a voice assistant, provides spoken description of items on the screen. The following are two ways of turning on/off VoiceOver.

Toggle VoiceOver

Use ⌘ Cmd + F5 to toggle on/off VoiceOver.

Enable/disable VoiceOver from the menu

Open System Preferences > Accessibility > VoiceOver. Click to turn if on/off.