IPA: /ʌnˈstɒpt/
KK: /ʌnˈstɑpt/
Describing something that does not have a stopper or is not blocked, allowing flow or continuation.
The unstopped bottle spilled water all over the table.
Unstopped → It is formed from "un-" (meaning not) and "stopped" (from the verb "stop", which comes from Old English "stoppian", meaning to close or block). The word "unstopped" means not closed or blocked, indicating something that is open or flowing freely.
Think of 'not' ('un-') being added to 'stopped', which means something is open and flowing freely.