Internalist

Part of speech: noun, adjective

Definitions

A person who believes that explanations or justifications should be found within a system itself, often in philosophy or epistemology; an advocate for inward-looking analysis prioritizing internal elements over external factors; one who emphasizes that understanding or reasoning arises from components contained inside a given framework rather than from outside influences
An individual espousing the view that concepts, meanings, or justifications are determined solely by internal conditions without reference to external environment; a thinker who insists upon explanations grounded in the inner logic or mental states of a subject; a proponent of interpretive methods focused on what resides inside a theoretical or cognitive system instead of external context
Someone who upholds that the basis for knowledge, language, or meaning is rooted in internal structures or mental content; a scholar favoring approaches that locate criteria, evidence, or causes within a system itself rather than appealing to external realities; a theorist arguing that understanding is to be derived from intrinsic rather than extrinsic sources or influences

Etymology: The word is a straightforward formation: "internal" plus the suffix "-ist," which denotes a follower, practitioner, or advocate of a doctrine. That suffix has a long pedigree. It descends from Ancient Greek "-istēs," added to verb stems such as "-izein" to name a person who does or supports something, and it passed into Latin as "-ista" and then through Old French "-iste" into Middle English as "-ist." English has used it freely ever since, generating "realist," "materialist," and "behaviourist" in the same way. "Internal" itself came into English from Latin "internus," meaning "inward" or "interior," so the new word simply labels someone who holds the inward-focused view. Its meaning follows the sense of the base: a person who insists that explanations must be found within a system rather than in outside circumstances.