An onomatopoetic word for high-pitched, continuous, cackling laughter — laughing loudly and shrill, often in a giddy way.
子どもたちが公園でケラケラ笑っている。
The children are giggling loudly in the park.
彼女は冗談を聞いてケラケラと笑い出した。
She heard the joke and burst into high-pitched laughter.
会議中に話が脱線して、数人がケラケラと笑った。
The discussion went off-topic in the meeting and a few people started laughing loudly.