There are a multitude of synonyms for the phrase "am comfortable" that can be used to describe a person's level of contentment or ease. Some alternatives to "am comfortable" include "feel at ease," "am relaxed," "am cozy," "am content," "am relaxed," "am at peace," "am tranquil," "am snug," and "am settled." Each of these phrases can convey a similar message that the person is content, relaxed, and in a state of physical or emotional comfort. It is important to choose the right synonym based on the context of the situation and the tone of the overall message.