English edit

Etymology edit

thunderstorm +‎ -y

Adjective edit

thunderstormy (comparative more thunderstormy, superlative most thunderstormy)

  1. Characterised by thunderstorms.
    • 1973, Jane Roberts, The education of Oversoul Seven, page 8:
      It was a thunderstormy morning, eleven o'clock, with great dashes of rain pounding against the windows.