There are many different ways to describe working late, depending on the context and the tone you want to convey. Some possible synonyms include burning the midnight oil, pulling an all-nighter, burning the candle at both ends, clocking overtime, working past normal hours, staying late at the office, or putting in extra time. Each of these phrases has its own connotations and implications, so it's important to choose the right one based on your intended meaning. Whether you're trying to convey dedication, diligence, exhaustion, or frustration, there's a synonym for working late that can help you express yourself more effectively.