screwup

erroneous, untrue, false, devoid of truth, fallacious, apocryphal, unreal, ungrounded, groundless; unsubstantial; heretical (heterodox); unsound; illogical., inexact, unexact, inaccurate, incorrect; indefinite (uncertain)., illusive, illusory; delusive; mock, ideal (imaginary); spurious; deceitful; perverted.