Synonyms : efflorescence, roseola, skin rash

Example : A rash of bank robberies.
A blizzard of lawsuits.

Synonyms : blizzard

Example : Do something rash that he will forever repent.

Example : Foolhardy enough to try to seize the gun from the hijacker.
Became the fiercest and most reckless of partisans.
A reckless driver.
A rash attempt to climb Mount Everest.

Synonyms : foolhardy, heady, reckless