TEMPEramental
Main Entry: tem·per·a·men·tal
Function: adjective
Pronunciation: "tem-p(&-)r&-'men-t & l, "tem-p&r-'
1 : of, relating to, or arising from temperament : CONSTITUTIONAL <temperamental peculiarities>
2 a : marked by excessive sensitivity and impulsive changes of mood <a temperamental child> b : unpredictable in behavior or performance