Answer:

failed

Answer	Crossword Clue
FAILED	Struck out
FAILED	Didn't make it
FAILED	Needed to retake, maybe

FAILED	Went belly up
FAILED	Gave out
FAILED	Went out of business
FAILED	Came up short
FAILED	Didn't hit the books?
FAILED	Fell short
FAILED	Came a cropper
FAILED	Became weaker.

FAILED	Verb in a Kipling title.
FAILED	Was unsuccessful.
FAILED	Became insolvent
FAILED	Went bankrupt
FAILED	Was unsuccessful
FAILED	Went down in history?
FAILED	Unsuccessful
FAILED	Received less than a passing grade

FAILED	Didn't pass
FAILED	Laid an egg
FAILED	Received an F
FAILED	Didn't make the grade
FAILED	Couldn't even get a D