Lallation may refer to:
* A developmental stage in
infantile speech
Infantile speech, pedolalia, baby talk, infantile perseveration, or infantilism is a speech disorder, persistence of early speech development stage beyond the age when it is normally expected. It is characterized by the omission of some sounds and ...
from around 7–8 months when a child repeats (often incorrectly) sounds they have heard
* A difficulty with enunciation which makes ''l'' sound like ''r'' (see
lambdacism
A speech sound disorder (SSD) is a speech disorder affecting the ability to pronounce speech sounds, which includes speech articulation disorders and phonemic disorders, the latter referring to some sounds (phonemes) not being produced or used ...
) or vice versa (see
rhotacism)
{{dab, type=phonetics