Tee-hee is a playful and casual way of expressing a soft laugh. However, there are many other words that can be used as synonyms for tee-hee, depending on the context and the situation. Some of the commonly used synonyms for tee-hee are chuckle, giggle, snicker, cackle, chortle, guffaw, and titter. All these words represent different kinds of laughter, ranging from soft and suppressed giggles to loud and infectious bursts of laughter. Regardless of the choice of synonym, all of them are great ways to acknowledge a hilarious joke or situation and to show appreciation for the humor.