expository

The word 'expository' originates from the Latin verb exponere, meaning "to set forth, explain, or expose," which itself is a compound of ex- ("out") and ponere ("to place"). The core concept is of placing information out into the open for examination. This literal sense of "placing out" evolved into the abstract meaning of explaining or describing a subject clearly. The English adjective was formed by adapting the past participial stem posit- from exponere and adding the adjectival suffix -ory, resulting in a term that pertains to the act of systematic explanation.

Structure: ex (out) + posit (to place) + ory (adjective suffix) - ex: Latin origin, a prefix meaning "out, out of, from." - posit: Latin origin, from the verb ponere (to place). The form 'posit' is a direct substring of the spelling. - ory: Latin origin, an adjectival suffix meaning "pertaining to, serving for."