One could use various words to describe the act of "tarrying at" or lingering somewhere for longer than necessary. Some synonyms for the phrase might include loitering, delaying, or procrastinating. Other options could be stalling, hesitating, lingering, dawdling, or meandering. Each of these words conveys a sense of taking more time than is appropriate or necessary, and can be used in a variety of contexts, from describing someone who is taking too long to leave a location to someone who is putting off completing a task or making a decision. Ultimately, the choice of synonym will depend on the specific context and the desired tone or emphasis.