えへらえへら

adverb, adverb taking the 'to' particle

with a silly laugh; with a hollow laugh

Describes laughing in a meaningless, silly, or insincere way, often with a sense of emptiness or awkwardness. Mimetic word; often used with 笑う or する.

• 彼かれはえへらえへら笑わらってごまかした。

  He laughed it off with a silly, hollow laugh.

• 叱しかられているのに、えへらえへらしている。

  Even though he's being scolded, he's grinning meaninglessly.