キャーキャー

adverb, adverb taking the 'to' particle

shrieking; squealing; screeching

High-pitched, excited or panicked vocal sounds, often by people (especially children or women) or animals. Can be playful or distressed.

• 子こどもたちがプールでキャーキャー騒さわいでいる。

  The children are shrieking and making noise in the pool.

• ホラー映えい画がを見みながら彼かの女じょはキャーキャー叫さけんでいた。

  She was shrieking while watching the horror movie.

adverb, adverb taking the 'to' particle

chattering; chittering

Describes the rapid, high-pitched vocalizations of monkeys or similar animals. Less common than sense 1.

• 猿さるが木きの上うえでキャッキャと鳴ないている。

  The monkeys are chattering up in the tree.