There are several synonyms for the term "make motionless." Some of these include immobilize, freeze, stun, paralyze, and freeze in place. When someone is immobilized, they are unable to move or make any type of movement. Freezing someone or something in place means that they are stuck and cannot move. When someone is stunned, they are in a temporary state of shock and are unable to move or react. Paralyzing someone means that they are unable to move or use their muscles. These synonyms are useful in conveying a specific state of being where something or someone is unable to move at all.