abomination atrocity bad bane befoulment blemish blight block blockade bottleneck bug catch cordon corruption crack crying evil curtain damage defect defection deficiency defilement despoliation destruction determent deterrent detriment difficulty drawback evil failing failure fault faute flaw foible frailty grievance hang-up harm havoc hazard hitch hole hurdle hurt ill imperfection inadequacy infection infirmity injury joker kink little problem mischief objection obstacle obstruction obstructive one small difficulty outrage poison pollution problem rift rub shortcoming snag something missing stumbling block stumbling stone taint the worst toxin venom vexation vulnerable place weak link weak point weakness woe wrong