umbra

1 a time or place of little or no light strange noises were coming from the wooded umbra beyond our campfire Synonyms of umbra black, blackness, candlelight, darkness, dusk, gloaming, gloom, murk, night, semidarkness, shade, shadows, twilight, darkWords Related to umbra midnight; blackout, brownout, dimout; shadiness, umbrage; dullness (also dulness), somberness; cloudiness, fogginess, haziness, mistiness, murkiness; dimness, faintness, gloominess, grayness, paleness; half-lightNear Antonyms of umbra moonlight, starlight, sunlight; effulgence, radiance, radiancy, shine, sunshine; incandescence, luminance, luminescence, luminosity, luminousnessAntonyms of umbra blaze, brightness, brilliance, day, daylight, glare, glow, light, lightness

2 partial darkness due to the obstruction of light rays during a solar eclipse observers located within the umbra experience a complete blocking of the sun by the moon Synonyms of umbra dusk, penumbra, shadiness, shadow, shadeWords Related to umbra blackness, dimness, duskiness, gloom, gloominess, murkiness, obscurity, semidarkness, somberness; cloudinessNear Antonyms of umbra brightness, brilliance, effulgence, illumination, incandescence, light, lightness, lucidity, lucidness, luminance, luminosity, luminousness, radiance, radiancy