- pertaining to pseudo-linguistics. Deprecating of scholarship thought to purport to be linguistic but falling short of the necessary standards
- representatives of previous pseudolinguistic science, the philologists (The Rice institute pamphlets, Volume 2 (1915), p. 172)
- quasilinguistic. Having some qualities similar to language, but not quite amounting to language in the narrow sense.
- Relating to pseudolanguage.
pseudo- + linguistic. In use in sense (1.) from the early 20th century.