lallate
verb1
To speak pronouncing the letter "r" so that it sounds like "l".
2
To speak like a baby.
- […] he was pulled in by the smell of fresh coffee and the sound of Isabel and Rosalinda burbling and lallating together.2008, Clive Hazell, The Room:
- […] the therapist would start tiresomely lallating over and over and over again what her therapeutic philosophies and goals and wishes for the depressed person were […]2014, David Foster Wallace, The David Foster Wallace Reader:
1 more example
- Meanwhile I go on troweling, slavering the world with language as Jake squeals like a held bird and begins lallating to me in tongues.2014, William Roetzheim, The Giant Book of Poetry: