Merriam-Webster's Dictionary and Thesaurus - Merriam-Webster [806]
light·face noun : a type having light thin lines
— light·faced adjective
light–head·ed adjective 1 : feeling confused or dizzy
2 : lacking maturity or seriousness
Synonyms
[1] dizzy, giddy—more at DIZZY
[2] flighty, frivolous, giddy, goofy, harebrained, scatterbrained, silly—more at GIDDY
light·heart·ed adjective : free from worry
— light·heart·ed·ly adverb
Synonyms
carefree, careless, cavalier, easygoing, gay, happy-go-lucky, insouciant, unconcerned
light·heart·ed·ness noun : the quality or state of being lighthearted
Synonyms
abandon, abandonment, ease, naturalness, spontaneity, unrestraint—more at ABANDON
light·house noun : a structure with a powerful light for guiding sailors
light·ly adverb : in a light manner
Synonyms
easily, effortlessly, fluently, freely, handily, painlessly, readily, smoothly—more at EASILY
light meter noun : a usu. hand-held device for indicating correct photographic exposure
1lightness noun : the quality or state of being illuminated
Synonyms
brilliance, dazzle, effulgence, illumination, lucidity, luminosity, radiance, refulgence, splendor—more at BRILLIANCE
2lightness noun 1 : lack of seriousness and stability of character often accompanied by casual heedlessness
2 : the quality or state of being light esp. in weight
Synonyms
facetiousness, flightiness, flippancy, frivolity, levity—more at FRIVOLITY
1lightning noun : the flashing of light produced by a discharge of atmospheric electricity; also : the discharge itself
2lightning adjective : extremely fast
Synonyms
breakneck, breathless, brisk, dizzy, fast, fleet, hasty, nippy, quick, rapid, rattling, snappy, speedy, swift—more at FAST
lightning bug noun : FIREFLY
lightning rod noun : a grounded metallic rod set up on a structure to protect it from lightning
light out verb : to leave in a hurry
light·proof adjective : impenetrable by light
lights noun plural : the lungs esp. of a slaughtered animal
light·ship noun : a ship with a powerful light moored at a place dangerous to navigation
light show noun : a kaleidoscopic display (as of colored lights)
light·some adjective 1 : free from care
2 : NIMBLE
Synonyms
blithe, bright, buoyant, cheerful, cheery, chipper, gay, sunny, upbeat—more at CHEERFUL
1lightweight noun 1 : one of less than average weight; especially : a boxer weighing not over 135 pounds
2 : one of little consequence or ability
2lightweight adjective 1 : INCONSEQUENTIAL
2 : of less than average weight
light–year noun 1 : an astronomical unit of distance equal to the distance that light travels in one year in a vacuum or about 5.88 trillion miles (9.46 trillion kilometers)
2 : an extremely large measure of comparison lig·nin noun : a substance related to cellulose that occurs in the woody cell walls of plants and in the cementing material between them lig·nite noun : brownish black soft coal 1like verb liked; lik·ing 1 : to feel attraction toward or take pleasure in : ENJOY <~s baseball> 2 : to wish to have : WANT 3 : to feel inclined : CHOOSE — lik·able or like·able adjective Synonyms [1] favor, lean, prefer—more at PREFER [1] adore, delight, dig, enjoy, fancy, groove, love, relish, revel—more at ENJOY [2, 3] choose, want, will, wish 2like noun : favorable regard : PREFERENCE Synonyms appetite, fancy, favor, fondness, liking, love, partiality, preference, relish, shine, taste, use—more at LIKING 3like adjective : the same or nearly the same (as in appearance, character, or quantity) : SIMILAR Synonyms akin, alike, analogous, comparable, correspondent, parallel, similar, such—more at ALIKE 4like preposition 1 : similar or similarly to 2 : typical of 3 : comparable to 4 : as though there would be