A few synonyms for felt-tipped pen include marker, felt pen, fiber-tipped pen, and fineliner. Felt-tipped pens have been around for many years and are popular among artists, designers, and writers. They are versatile and can be used for a variety of projects, from coloring books to note-taking. The ink in felt-tipped pens is typically water-based and can come in a range of colors. Markers and fiber-tipped pens are similar to felt-tipped pens and can also be used for a wide variety of purposes. Whether you're drawing, writing, or just doodling, there's bound to be a pen that suits your needs.