Here are the possible solutions for says with certainty clue
Answer
Clue
Relevancy
asserts
Clue
Says with certainty
Definition
ASSERT, to state positively
avers
Clue
Says with certainty
Definition
AVER, to declare positively
cal
Clue
Ricky Bobby's friend who says "I like to picture Jesus in a tuxedo T-shirt because it says I want to be formal, but I'm here to party" which is actually kind of true lol Will Ferrell is a comedic geni