ケロケロ

adverb, adverb taking the 'to' particle

croaking; ribbit ribbit

Mimics the sound of a frog croaking. Often used adverbially with と or as a standalone sound effect.

• 池いけのそばでカエルがケロケロと鳴ないていた。

  Frogs were croaking by the pond.

adverb, noun or participle which takes 'suru'

robotic auto-tune effect

Colloquial onomatopoeia for a robotic, auto-tuned vocal sound, often used in music or voice effects. Can be used as a する verb.

• 彼かれの声こえがケロケロしていて、まるでロボットみたいだ。

  His voice sounds robotic, just like a robot.