IPA: /ˈʃʌtərləs/
KK: /ˈʃʌtərləs/
Not having a shutter, which is a device that opens and closes to control light or view.
The camera was designed to be shutterless, allowing for continuous shooting without interruptions.
Shutterless → It is formed from "shutter" (from Old English *scyttre*, meaning a movable cover or screen) and "-less" (meaning without). The word "shutterless" means without a shutter or movable cover.
Think of a window that is 'without' ('-less') a 'movable cover' ('shutter') — that's what shutterless means.