| LIGHTLESS | • lightless adj. Lacking light; unilluminated; dark. • LIGHTLESS adj. without lights.
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| LIGHTLIED | • LIGHTLY v. to slight or make light of, also LICHTLY. | 
| LIGHTLIES | • LIGHTLY v. to slight or make light of, also LICHTLY. | 
| NIGHTLESS | • nightless adj. Without night. • NIGHTLESS adj. having no night.
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| NIGHTLIFE | • nightlife n. Nocturnal activities, especially visiting nightclubs. • NIGHTLIFE n. life that goes on at night.
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| NIGHTLIKE | • nightlike adj. Resembling night or some aspect of it; dark, tenebrous. • NIGHTLIKE adj. like the night.
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| NIGHTLONG | • nightlong adj. Lasting a night (i.e. the duration of one night); lasting all night. • nightlong adv. Through the night.
 • NIGHTLONG adj. lasting all night.
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| RIGHTLESS | • rightless adj. Lacking rights or privileges. • RIGHTLESS adj. destitute of right.
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| SIGHTLESS | • sightless adj. Without sight; blind; unseeing. • sightless adj. Synonym of invisible.
 • SIGHTLESS adj. blind.
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| SIGHTLIER | • sightlier adj. Comparative form of sightly: more sightly. • SIGHTLY adj. pleasing to look at.
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| SIGHTLINE | • sightline n. A line between an observer or a piece of optical equipment and an object of interest; line of sight. • SIGHTLINE n. a line of sight.
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| SPRIGHTLY | • sprightly adj. Animated, gay, or vivacious; lively, spirited. • sprightly adj. Of a person: full of life and vigour, especially with a light and springy step.
 • sprightly adj. (Obsolete, rare) Of or relating to a sprite; ghostly, spectral.
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| UNSIGHTLY | • unsightly adj. Displeasing to the eye. • UNSIGHTLY adj. unpleasant to look at.
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| UPRIGHTLY | • uprightly adv. In an upright manner. • UPRIGHT adv. vertical.
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