trouble spot

: the quality or state of being troubled especially mentally

: public unrest or disturbance

: an instance of trouble

: to agitate mentally or spiritually : worry, disturb

: to put to exertion or inconvenience

: to produce physical disorder in : afflict

: a taint on character or reputation : fault

: a small area visibly different (as in color, finish, or material) from the surrounding area

: an area marred or marked (as by dirt)

: to stain the character or reputation of : disgrace

: to mark in or with a spot : stain

: to locate or identify by a spot

: being, originating, or done on the spot or in or for a particular spot

: available for immediate delivery after sale

: paid out upon delivery