"Is felled" is a phrase that signifies something or someone that has been knocked down or cut down, usually in regards to trees or people. Some synonyms for this phrase include "is brought down", "is toppled", "is chopped down", "is cut down", "is knocked over", "is prostrated", "is struck down", and "is tumbled". Each of these phrases signifies the act of being forcefully brought to the ground or being removed from a standing position. It is important to have a variety of synonyms to use in writing or speech to add depth and variety to one's language.