this word is used to describe a person or thing that is characterized by the quality of cuteness; it may also be used as a noun much like the word fatso.
1) Geez, Lucy, what a cuteso (adj.) scarf you're wearing today!
2) Aw, he is such a cuteso (n.)!
This word is the superlative form of the wordcutest. Usually used to describe a person that is unbelievably cute. There is no higher form of the word cute than this.
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).