The word "stucker" does not seem to have any commonly accepted synonyms. It is possible that "stuck" or "stuck-up" could be used to convey a similar meaning, but these words have different connotations and may not be appropriate in all contexts. Other words that could be associated with the concept of being stuck or immobile include "trapped," "pinned," "immobilized," or "stagnant." However, these words do not necessarily convey the same meaning as "stucker," which seems to suggest a state of being obstinate or stubborn. Overall, the lack of synonyms for "stucker" may reflect its relative obscurity as a word.