100 Phrasal Verbs in 100 Days 5/100: To slack off Imagine a student who, after getting good grades on the first few tests, starts to get lazy by not studying for the final exam. Their grades might drop as a result! That's a classic case of slacking off. "To slack off" means to reduce your effort, work less hard than usual, or simply be lazy when you should be working. Let's see some examples: 1. "It's easy to slack off on Fridays, but we still have deadlines to meet!" 2. "After the main project was completed, some team members started to slack off a bit." 3. "He realized he'd been slacking off on his fitness routine when he struggled during the hike."