Insonation is a less commonly used word, which means the act or process of sounding. However, if you're looking for synonyms for this word, there are quite a few options to choose from. Some possible synonyms for insonation include resonance, vibration, echo, reverberation, sonority, sound waves, acoustics, and audibility. These words are often used in a similar context and can help add variety to your writing or conversation. Whether you're discussing music, speech, or any other type of sound, these words can help you communicate your thoughts and ideas more effectively.