Unsoldierlike is an adjective that describes a lack of military qualities or behavior. Synonyms for unsoldierlike include unprofessional, unheroic, unwarlike, unmanly, and cowardly. These alternative words convey a deviation from the expected norms of a soldier. For example, unprofessional indicates a lack of discipline, while unheroic suggests a deficiency of courage. On the other hand, unwarlike implies a disinterest in combat, while unmanly refers to actions that are not typical of a male soldier. Lastly, cowardly is a straightforward term that indicates a lack of bravery or valor. All these synonyms paint a picture of someone who does not embody the qualities expected of a soldier.