| FLIGHTLESS | • flightless adj. Unable to fly. Usually used with birds such as the penguin, ostrich, and emu. • FLIGHTLESS adj. without flight. |
| KNIGHTLESS | • knightless adj. (Rare, obsolete) Unbecoming of a knight; unchivalrous. • knightless adj. (Not comparable) Without a knight. • KNIGHTLESS adj. (Spenser) unbecoming a knight. |
| KNIGHTLIER | • knightlier adj. Comparative form of knightly: more knightly. • KNIGHTLY adj. befitting a knight. |
| LIGHTLYING | • LIGHTLY v. to slight or make light of, also LICHTLY. |
| MIDNIGHTLY | • midnightly adj. Taking place at midnight. • MIDNIGHTLY adj. taking place in the middle of the night. |
| NIGHTLIFES | • nightlifes n. (Nonstandard) plural of nightlife. • NIGHTLIFE n. life that goes on at night. |
| NIGHTLIGHT | • nightlight n. A small, dim light or lamp left on overnight. • nightlight n. Light that shines at night such as moonlight, starlight, etc. • night␣light n. Alternative spelling of nightlight. |
| NIGHTLIVES | • nightlives n. Plural of nightlife. • NIGHTLIFE n. life that goes on at night. |
| OUTRIGHTLY | • outrightly adv. Outright. • OUTRIGHT adv. totally, completely. |
| SIGHTLIEST | • sightliest adj. Superlative form of sightly: most sightly. • SIGHTLY adj. pleasing to look at. |
| SIGHTLINES | • sightlines n. Plural of sightline. • SIGHTLINE n. a line of sight. |
| STRAIGHTLY | • straightly adv. In a straight manner; without curve or bend. • straightly adv. Without deviation; directly. • straightly adv. Immediately; straightaway. |
| UNKNIGHTLY | • unknightly adj. Not knightly. • unknightly adj. Of behaviour, not befitting a knight; ungallant. • UNKNIGHTLY adj. not knightly. |
| WEIGHTLESS | • weightless adj. Without weight. • weightless adj. Not affected by gravity. • WEIGHTLESS adj. having little weight. |