paroxysm /parˈok-si-zm/

1. A fit of acute pain
2. A sudden recurrence of symptoms
3. A fit of passion, laughter, coughing, etc
4. Any sudden violent action

paroxysˈmal adjective

• thunderous
• thunderously
• thunderousness
• thunderousnesses
• thunder peal
• thunder peals
• thunder-plump
• thunder-plumps
• thunders
• thunder sheet
• thunder sheets
• thundershower
• thundershowers
• thunderstone
• thunderstones
• thunderstorm
• thunderstorms
• thunderstricken
• thunderstrike
• thunderstrikes
• thunderstriking
• thunder-stroke
• thunder-strokes
• thunderstruck
• thundery