Bombinate means to make a humming or buzzing sound. There are several synonyms for this word such as hum, buzz, drone, whir, vibrate, and thrum. These words are commonly used to describe the sound made by various things such as machines, insects, and animals. For instance, a beehive can bombinate from the sound of bees buzzing inside it. A fan can also bombinate from the whirring sound that it makes while running. In summary, knowing the synonyms of bombinate gives you the benefit of having a wide range of words to apply when describing the different buzzing or humming sounds in our environment.