"Tick tock" is often used to describe the sound made by a ticking clock. However, there are several synonyms that can be used to describe this sound. Some of these include "ticking," "pulsing," "beating," "thumping," and "tapping." These words are also great for adding descriptive language and creating a vivid picture in writing. For example, "the pulsing sound of the clock echoed throughout the room" or "the constant tapping of the clock filled the silence." Synonyms can help to add variety and depth to writing by avoiding repetitive language and conveying a more precise meaning.