What does exteriorly mean?
Exteriorly is an uncommon adverb meaning "on the outside" or "with regard to the outer surface or appearance." It describes how something presents externally, often in deliberate contrast to what lies within: a building may be exteriorly severe while lavishly decorated inside, and a person may appear exteriorly composed while anxious underneath. The word derives from the Latin comparative "exterior," meaning "outer," and shares this origin with related terms such as "external" and "extraneous." Because it is rare and formal, it appears mainly in technical, architectural, anatomical, or literary contexts; ordinary conversation favors "externally" or "outwardly." Its value lies in precision: when a writer wants to stress the contrast between an outer face and an inner reality in a compact, single adverb, exteriorly offers a concise and elegant option.
adverbOn or toward the outside; in terms of the outer surface or appearance rather than the inside.
- With respect to or on the outside; relating to the outer surface or appearance of something rather than its inner nature.
"The cathedral was exteriorly plain, but its interior dazzled with gold mosaics."
"The fortress was exteriorly imposing, yet its halls were surprisingly austere."
"Exteriorly calm, she concealed her nervousness until the interview began."
Exteriorly belongs to a tiny family of adverbs — interiorly, anteriorly, posteriorly, superiorly — that all trace back to Latin comparatives, making it one of the few English adverbs you can rhyme with three of its own opposites and relatives.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of exteriorly
Exteriorly derives from "exterior," which comes from the Latin adjective "exterus" via its comparative form "exterior" ("more outward, outer"). The same Latin root produced English "external," "extraneous," and "exterminate," all carrying a sense of being outside or removed. The adverb formed from "exterior" entered English usage in scholarly and technical writing, though precise first-attestation dates are not reliably documented.
Related word forms
How exteriorly is actually used
A rare, formal word found mostly in technical, architectural, medical, or literary writing; in everyday speech "externally" or "outwardly" is strongly preferred.
Easily confused with exteriorly
"Exterior" is the adjective describing something's outer surface or the noun naming that surface, while "exteriorly" is the adverb describing how something appears or exists on the outside.