"Milk toast" is a colloquial term that refers to someone who is weak, timid, or easily intimidated. There are various synonyms that can be used to describe a person who exhibits these traits. One of the most commonly used synonyms is "milquetoast," which is derived from the same idea of someone being as bland as a slice of toast soaked in milk. Other synonyms that can be used include "spineless," "meek," "timid," "submissive," "weak-willed," "gutless," "faint-hearted," and "wimpish." All of these terms convey a sense of vulnerability and a lack of courage or assertiveness, which are the exact opposite of what is required for success in many areas of life.