fulminant

from WordNet (r) 3.0 (2006)

fulminant
    adj 1: sudden and severe; "fulminant pain"; "fulminant fever"

from The Collaborative International Dictionary of English v.0.48

Fulminant \Ful"mi*nant\, a. [L. fulminans, p. pr. of fulminare
   to lighten: cf. F. fulminant.]
   Thundering; fulminating. [R.] --Bailey.
   [1913 Webster]