Antonyms for the phrase "grabbed hold of" include letting go, releasing, surrendering, dropping, and relinquishing. While "grabbing hold of" implies a tight grip or securing something firmly, the opposite can mean to let go or release something from your grip. These antonyms can also signal a sense of freedom, surrender, or giving up control. For example, letting go of a task or problem may mean that you are relinquishing responsibility or acknowledging that there is nothing more you can do. Releasing a belief or habit can mean embracing change or growth. In different contexts, the opposite of "grabbing hold of" can carry a positive or negative connotation.