Phonaesthetics is like when you hear a word and it sounds a certain way that makes you feel a certain feeling or emotion inside. For example, if you hear the word "whisper," it might sound quiet and secretive, which makes you feel like you're hearing something private or secret.
It's like when you're singing a song and you get to a part that just feels really good to say out loud. The sounds of the words make you feel happy or excited, even though you might not even know exactly what the words mean.
Phonaesthetics is also used in poetry and literature. Writers use certain words that have a particular sound to create a mood or atmosphere in their writing. For example, if a writer wants to create a spooky feeling, they might use words that have a lot of s's like "slither" or "creep."
Overall, phonaesthetics is just about how certain sounds of words can make us feel certain ways or create a specific feeling in our minds when we hear them.