blip

nouns

a sudden minor shock or meaningless interruption
"the market had one bad blip today"; "you can't react to the day-to-day blips"; "renewed jitters in the wake of a blip in retail sales"
blip
is a type of (narrower)
an unpleasant or disappointing surprise
"it came as a shock to learn that he was injured"
blow, shock
a radar echo displayed so as to show the position of a reflecting surface
blip, pip, radar target