also: ろれろれ
adverb, na-adjective
slurring one's speech; speaking indistinctly
Mimetic word describing the sound of slurred, unclear speech, often due to drunkenness or tiredness. Rare term.
酔っ払って、レロレロになった口調で話し始めた。
He got drunk and started speaking in a slurred manner.
徹夜明けで、彼の言葉はレロレロだった。
After an all-nighter, his speech was slurred.
A common phrase meaning 'to be unable to speak clearly' or 'to slur one's words'. レロレロ is a mimetic adverb describing the sound itself, while ろれつが回らない is a more standard expression for the condition.
Mimetic word derived from the sound of slurred speech, likely a reduplication of the syllables 're' and 'ro' to imitate unclear articulation. The exact origin is uncertain.