DictionarythunderSound of lightning
noun / verb

thunder

THUN-dur/ˈθʌndər/

A loud rolling sound produced by lightning.

The adult covers both ears as thunder rumbles from the dark cloud.

After a distant lightning flash, an adult flinches and covers both ears as broad sound arcs emerge from a dark cloud; thunder distinguished as sound, sparse white surround.
Etymology

Old English þunor named both thunder and the god Thor. The shared word connects the storm’s resounding noise with its divine personification.

In context

Homemade Wanderlust75:26
I heard a little thunder earlier and again this is not somewhere up here that you want to be when the thunder and lightning decides to roll in
Continental Divide Trail Documentary: CHOOSE YOUR ADVENTURE

More examples

  • We hear thunder a few seconds after the lightning flashes.
  • It thunders all afternoon, but little rain falls.
  • Heavy trucks thunder past our house.

Forms

thunder · thunders · thundered · thundering

thunderous adjective — Very loud and deep, like thunder.

Similar words

rumble
A low, rolling sound, not necessarily caused by lightning.
roar
A loud, full sound without thunder's specifically rolling quality.