Okay kiddo, so a morphome is a little piece of a word that helps us understand what that word means. It's kind of like a puzzle piece that fits into the bigger picture of the word.
For example, let's look at the word "unhappily." The "un-" in front of "happily" is a morphome. It tells us that something is the opposite of what we think. So "unhappily" means that we are not happy.
There are different types of morphomes too - some change the meaning of a word completely, while others just add a little bit of extra information.
Linguists study all these different pieces in words and how they are put together to better understand how languages work. It's like we are detectives trying to solve the mystery of language!