screwup

[skroo-uhp] /ˈskruˌʌp/
noun, Slang.
1.
a mistake or blunder:
The package was delayed through an addressing screwup.
2.
a habitual blunderer.
Also, screw-up.
Origin
1955-60; Americanism; noun use of verb phrase screw up
British Dictionary definitions for screw-up

screw up

verb (transitive, adverb)
1.
to twist out of shape or distort
2.
to summon up or call upon: to screw up one's courage
3.
(also intransitive) (informal) to mishandle or make a mess (of)
4.
(often passive) (informal) to cause to become very anxious, confused, or nervous: he is really screwed up about his exams
noun
5.
(slang) something mishandled or done badly
Slang definitions & phrases for screw-up

screw-up

noun
  1. A chronic bungler; a consistently inept person; fuck-up (WWII Army)
  2. A confused situation; a botch; fuck-up: The program's a total screw-up (1950s+)