shrilly

/ˈʃrɪli/
adverb
  1. In a high-pitched, piercing, and often unpleasant way.
    • The child screamed shrilly when she saw the spider.
    • The alarm clock rang shrilly, waking everyone in the house.
    • He laughed shrilly, making the others in the room cover their ears.
Antonyms
What does "shrilly" mean? | whatsthatwordmean | whatsthatwordmean