Prophet-of-doom - Idioms by The Free Dictionary
prophet of doom (redirected from prophet-of-doom)
prophet of doom
A person who always warns others about possible negative consequences of decisions or actions. Don't tell Rodney about your new plan—he's such a prophet of doom that he'll completely kill your motivation.
a ˌprophet of ˈdoom,
a ˈdoom merchant a person who always expects that things will go very badly: Various prophets of doom have suggested that standards in education are worse than ever.