careful — definition

careful - Definition from the Merriam-Webster Online Dictionary
Function: adjective
Inflected Form(s): care·ful·ler; care·ful·lest

Carefuller? Carefullest? Really? Who knew. Today Jackson's grammar said so and I had to look it up to be sure.

Also: JUST GOT TICKETS TO MUSE CONCERT IN VEGAS IN DECEMBER. I'M TRYING TO BE CALM, BUT AT LEAST I CAN ALLOW MY FINGERS TO YELL ABOUT IT.