Onomatologic refers to the study of the origins and usage of words that phonetically imitate or resemble the sound they describe. There are a few synonyms for this word, including onomatopoeic, which is commonly used to describe words that sound like their meaning (such as "buzz" or "meow"). Another synonym is echoic, which refers to words that mimic sounds in the environment, such as "splash" or "crash." Additionally, there is also the term phonomimic, which describes words that imitate vocal sounds or other audible phenomena. Overall, these synonyms highlight the importance of sound in language and how language can be used to mimic our experiences of the world around us.