radiant

¹ra·di·ant

adjective \ˈrā-dē-ənt\

Definition of RADIANT

1

a : radiating rays or reflecting beams of light

b : vividly bright and shining : glowing

2

: marked by or expressive of love, confidence, or happiness <a radiant smile>

3

a : emitted or transmitted by radiation

b : emitting or relating to radiant heat

— ra·di·ant·ly adverb

Examples of RADIANT

1. She had a radiant inner glow.
2. She looked radiant at her wedding.

First Known Use of RADIANT

15th century

Related to RADIANT

Synonyms

aglow, beaming, bright, glowing, sunny

Antonyms

dim, dull, lackluster, unbright, unbrilliant

Related Words

brilliant, dazzling, effulgent, gleaming, luminous, refulgent, shining, starry; blithe, blithesome, bright, cheerful, cheery, chipper, gay, gladsome, lightsome, merry, mirthful, optimistic, upbeat; jocund, jovial, laughing, smiling; blooming, rosy; blissful, chuffed [British], delighted, gratified, happy, joyful, joyous, pleased, satisfied, thankful, tickled

Near Antonyms

blank, flat, listless, stoic (or stoical), unemotional; black, dark, darkening, depressing, dismal, gloomy, glum, gray (also grey), melancholy, sullen; frowning, glaring, glowering, lowering (also louring), scowling

See Synonym Discussion at bright

Rhymes with RADIANT

gradient

²radiant

noun

Definition of RADIANT

: something that radiates: as

a : a point in the heavens at which the visible paths of meteors appear to meet when traced backward

b : the part of a gas or electric heater that becomes incandescent

First Known Use of RADIANT

circa 1741

ra·di·ant

adjective \ˈrād-ē-ənt\   (Medical Dictionary)

Medical Definition of RADIANT

1

: emitted or transmitted by radiation

2

: emitting or relating to radiant heat