Given a category and a set of five words, find the word from the set that does not belong (i.e. is the least relevant) with the other words in the category. Words are separated by commas.

Category: emotional status 
Words: sliding, down, emotionalities, remorseful, emotional upsets
sliding

Category: aesthetic characteristic 
Words: fair, medium, size, light, loyal
loyal

Category: emotional status 
Words: board, frustrated, sad, emotional supports, fret

board