Crossword Clue:

HYPOTHETISE to form a hypothesis

AnswerCrossword Clue
ININKWay to fill out a form
SEXBox to check on a form
LINEONEStart of a form to fill out
LINEATop of a form to be filled out
LINEAFirst part of a form to fill out
EONHow long it might take for a mountain to form
WITA pun is said to be the lowest form of this
CANDYCANEChristmas tree decoration ... or a hint to what the circled letters form