| Main Entry: | |
| Part of Speech: | noun |
| Definition: | beginning of darkness |
| Synonyms: | black*, crepuscule, dim, dusk, eve, eventide, sundown, sunset, twilight, vespers |
| Antonyms: | daybreak |
| Main Entry: | darkness |
| Part of Speech: | noun |
| Definition: | place, time that is unlit |
| Synonyms: | Cimmerian shade, black, blackness, blackout, brownout, calignosity, cloudiness, crepuscule, dark, dimness, dusk, duskiness, eclipse, gloom, lightlessness, murk, murkiness, nightfall, obscurity, pitch darkness, shade, shadiness, shadows, smokiness, tenebrosity, twilight |
| Antonyms: | brightness, day, daylight, daytime, illumination, light, lightness, morning |
| Main Entry: | dusk |
| Part of Speech: | noun |
| Definition: | early evening |
| Synonyms: | dark, dimday, dimmet, eventide, gloaming, gloom, night, nightfall, sundown, sunset, twilight |
| Antonyms: | dawn |
| Main Entry: | evening |
| Part of Speech: | noun |
| Definition: | latter part of a day |
| Synonyms: | black, close, dark, decline, dim, dusk, duskiness, early black, eve, even, eventide, late afternoon, nightfall, sundown, sunset, twilight |
| Antonyms: | morning |
| Main Entry: | night |
| Part of Speech: | noun |
| Definition: | part of day after sundown and before sunrise |
| Synonyms: | after dark, after hours, bedtime, before dawn, black*, blackness, dark, dark hours, darkness, dead of night, dim, dusk to dawn, duskiness, evening, eventide, gloom, midnight, nightfall, nighttide, nighttime, obscurity*, pitch dark, twilight, witching hour |
| Antonyms: | day |
| Main Entry: | sunset |
| Part of Speech: | noun |
| Definition: | fall of sun below horizon |
| Synonyms: | close of day, crepusular light, dusk, eve, evening, eventide, gloaming, nightfall, sundown, twilight |
| Antonyms: | sunrise |
| Main Entry: | twilight |
| Part of Speech: | noun |
| Definition: | onset of darkness at end of day |
| Synonyms: | afterglow, afterlight, crepuscular light, decline, dimness, dusk, early evening, ebb, end, evening, eventide, gloaming, half-light, last phase, late-afternoon, night, nightfall, sundown, sunset |
| Antonyms: | daybreak, sunrise |
| Main Entry: | blackness |
| Part of Speech: | noun |
| Definition: | darkness |
| Synonyms: | dark, dimness, duskiness, gloom, murkiness, nightfall, total darkness |
| Antonyms: | light, lightness |
| Main Entry: | nighttime |
| Part of Speech: | noun |
| Definition: | darkness |
| Synonyms: | bedtime, dusk, midnight, night, nightfall |