Thunderous
Part of speech: adjective
Definition: Very loud; suggestive of thunder
Unpropitious
Part of speech: adjective
Definition: not propitious; unfavourable, untimely
Thunderous as an adjective is very loud; suggestive of thunder while Unpropitious as an adjective is not propitious; unfavourable, untimely
Part of speech: adjective
Definition: Very loud; suggestive of thunder
Part of speech: adjective
Definition: not propitious; unfavourable, untimely
We hope you now know whether to use Thunderous or Unpropitious in your sentence.