Definitions for "idiolect"
the language or speech of one individual at a particular period in life.
use of a language and of other social norms that are proper to a given enunciator.
"The Particular Speech Pattern of an Individual." This word was formed by taking the word "dialect," and replacing "dia-" with "idio-." As "dia-" implied "shared," "idio-" denotes singularity, from the Greek "idios" = "private or personal." The "-lect" part derives from the Greek root "lekt" meaning "spoken."