| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | external |
| Synonyms: | apparent, covering, depthless, exterior, facial, outer, outside, outward, shallow, shoal, superficial, top |
| Antonyms: | central, core, inside, interior, middle |
| Main Entry: | exterior |
| Part of Speech: | adjective |
| Definition: | outside |
| Synonyms: | exoteric, external, extraneous, extraterrestrial, extraterritorial, extrinsic, foreign, marginal, outdoor, outer, outermost, outlying, outmost, outward, over, peripheral, superficial, surface |
| Antonyms: | central, interior, middle |
| Main Entry: | external |
| Part of Speech: | adjective |
| Definition: | outside, extrinsic |
| Synonyms: | alien, apparent, exterior, extraneous, foreign, independent, out, outer, outermost, outmost, outward, over, peripheral, superficial, surface, visible |
| Antonyms: | inside, internal, intrinsic |
| Main Entry: | outer |
| Part of Speech: | adjective |
| Definition: | external, exposed |
| Synonyms: | alien, beyond, exoteric, exterior, extraneous, extrinsic, outermost, outlying, outmost, outside, outward, over, peripheral, remote, superficial, surface, without |
| Antonyms: | central, inner, interior |
| Main Entry: | outside |
| Part of Speech: | adjective |
| Definition: | external |
| Synonyms: | alfresco, alien, apart from, away from, exterior, extramural, extraneous, extreme, farther, farthest, foreign, furthest, open-air, out, outdoor, outer, outermost, outward, over, surface |
| Antonyms: | central, inside, internal, middle |
| Main Entry: | outward |
| Part of Speech: | adjective |
| Definition: | visible; for appearances |
| Synonyms: | apparent, evident, exterior, external, from within, noticeable, observable, obvious, on the surface, open, ostensible, out, outer, outside, over, perceptible, superficial, surface, to the eye, toward the edge |
| Antonyms: | invisible, inward |
| Main Entry: | peripheral |
| Part of Speech: | adjective |
| Definition: | minor, outside |
| Synonyms: | beside the point, borderline, exterior, external, incidental, inessential, irrelevant, minor, outer, outermost, perimetric, secondary, superficial, surface, tangential, unimportant |
| Antonyms: | central, crucial, internal, major |
| Main Entry: | seeming |
| Part of Speech: | adjective |
| Definition: | apparent |
| Synonyms: | appearing, illusive, illusory, ostensible, outward, professed, quasi-, semblant, specious, surface |
| Antonyms: | real, true |
| Main Entry: | shallow |
| Part of Speech: | adjective |
| Definition: | not deep |
| Synonyms: | cursory, depthless, empty, flat, hollow, inconsiderable, sand bar, shelf, shoal, slight, superficial, surface, trifling, trivial, unsound |
| Notes: | callow means lacking experience of life, immature - while shallow means lacking depth of intellect, emotion, or knowledge |
| Antonyms: | deep |