The word "guttiest" is used to describe someone who is brave or fearless. Some antonyms for guttiest include timid, cowardly, fearful, and apprehensive. These words are used to describe someone who is afraid or hesitant in the face of danger or adversity. Other antonyms for guttiest include spineless, faint-hearted, and chicken-hearted. These words are used to describe someone who lacks courage and is easily intimidated. Antonyms for guttiest serve as a reminder that not everyone is capable of being bold and courageous all the time, and that it's okay to feel afraid at times.