| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | open to the atmosphere |
| Synonyms: | aerial, atmospheric, blowy, breezy, drafty, exposed, fluttering, fresh, gaseous, gusty, light, lofty, out-of-doors, uncluttered, vaporous, ventilated, well-ventilated, windy |
| Antonyms: | close, closed, oppressive, stuffy |
| Main Entry: | outdoors |
| Part of Speech: | noun |
| Definition: | open air; nature |
| Synonyms: | bucolic surroundings, country, countryside, environment, fresh air, garden, green earth, hill, mountain, open, out-of-doors, patio, without, woods, yard |
| Antonyms: | indoors |
| Main Entry: | without |
| Part of Speech: | adverb |
| Definition: | outside |
| Synonyms: | after, beyond, externally, left out, on the outside, out, out-of-doors, outdoors, outwardly, past |
| Antonyms: | inside |
| Main Entry: | open air |
| Part of Speech: | noun |
| Definition: | where air is unconfined |
| Synonyms: | alfresco, great outdoors, open, out-of-doors, outdoors, outside |
| Main Entry: | pneumatic |
| Part of Speech: | adjective |
| Definition: | airy |
| Synonyms: | aerial, atmospheric, blowy, breezy, drafty, exposed, fluttering, fresh, gaseous, gusty, light, lofty, out-of-doors, uncluttered, vaporous, ventilated, well-ventilated, windy |