"Hold onto" is a common phrase we use in our daily lives to indicate grasping onto something tightly, both literally and figuratively. Synonyms to "hold onto" could include words such as grip, clutch, embrace, hug, secure, grasp, cling, stick, clasp, or seize. These words can be used interchangeably with "hold onto" in various contexts, such as holding onto a rope tightly, holding onto a relationship, or even holding onto your beliefs or principles. By using different synonyms for "hold onto," you can add variety to your language and effectively convey the same message. Additionally, using synonyms for the same word can also make your writing or conversation more interesting and engaging.