1. Coasting: This means to move forward easily without much effort or strain. It's often used to describe someone who is not working hard or putting in much effort, especially after having achieved something.
* Example: "After finishing the exam, I just coasted through the rest of the semester."
2. Coast on (something): This means to rely on something previously achieved for success or progress. It implies a lack of effort or motivation to improve further.
* Example: "He's been coasting on his reputation ever since his last book became a bestseller."
3. Coast along/by: This means to move forward at a steady and effortless pace. It can also refer to a relaxed or effortless attitude.
* Example: "We coasted along the scenic route, enjoying the beautiful views."
4. Coast in: This means to arrive or achieve something easily or without much effort.
* Example: "We coasted in to victory after a dominant performance."
In all these instances, the idiom "coast" implies ease, relaxation, and a lack of significant effort.