| Main Entry: | |
| 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: | centrifugal |
| Part of Speech: | adjective |
| Definition: | radiating from a central point |
| Synonyms: | deviating, diffusive, divergent, diverging, eccentric, efferent, outward, radial, spiral, spreading |
| Notes: | centrifugal force pulls away or pushes outward; centripetal draws toward or pulls inward |
| Antonyms: | centripetal |
| 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: | extrinsic |
| Part of Speech: | adjective |
| Definition: | foreign |
| Synonyms: | acquired, alien, exotic, exterior, external, extraneous, gained, imported, outer, outside, outward, superficial |
| Antonyms: | essential, integral, interior, intrinsic, necessary |
| Main Entry: | ostensible |
| Part of Speech: | adjective |
| Definition: | alleged, supposed |
| Synonyms: | apparent, avowed, colorable, demonstrative, exhibited, illusive, illusory, likely, manifest, notable, outward, plausible, pretended, professed, purported, quasi, seeming, semblant, so-called, specious, superficial |
| Antonyms: | improbable, obscure, unlikely, vague |
| Main Entry: | out |
| Part of Speech: | adverb |
| Definition: | outside, outdoors |
| Synonyms: | out of doors, outward, without |
| Antonyms: | in, indoors, inside |
| 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: | outermost |
| Part of Speech: | adjective |
| Definition: | outer |
| Synonyms: | beyond, distant, fringe, furthermost, outlying, outmost, outward, peripheral, remote |