The word "more stoppered" refers to something that has been sealed or closed off. Antonyms for this word may include "unplugged," "open," "unlocked," or "unstoppable." These words refer to things that are not closed, obstructed, or held back. For example, a bottle can be "more stoppered" if its lid is screwed on tightly, but it is "unplugged" once the lid is removed. Similarly, a door is "stoppered" when it is locked, but it is "unlocked" when the key is turned. In general, antonyms for "more stoppered" refer to things that are free to move or flow without any obstruction or hindrance.