[superekstraorðinaˈɾisimo] : extremely superextraordinary
At 22 letters, is often considered to be the longest word in the Spanish language.
However, the status of this word has been challenged for lack of popular use.
At 24 letters (electroencephalographists) the word has been cited as the longest Spanish word in actual use.
Humourously, the longest Spanish word is often cited to be arroz (rice), because it “starts with an ‘a’ and ends with a ‘z’,” the first and last letters of the Spanish alphabet (also most traditional alphabets).