radiant

radiant — adjective

1. having a face or expression that seems to glow because you feel very happy, are

1.adjectiveB2
Definition

having a face or expression that seems to glow because you feel very happy, are in love, or are in very good health.

Example

Salma's face was radiant with joy when she opened the acceptance letter.

radiant with joy — cause collocation

The bride looked absolutely radiant in her white wedding dress.

radiant bride — wedding context

Common collocations
  • radiant with joy
  • radiant with happiness
  • radiant smile
  • radiant face
  • radiant beauty
  • radiant bride
Synonyms
  • beaming

    focuses on a broad, open smile rather than a full-face glow

  • glowing

    emphasises a warm, healthy look in the skin, often from exercise or good health

  • joyful

    describes the inner feeling more than the visible expression

Antonyms
  • dull

    lacking brightness or liveliness in expression

  • gloomy

    sad or depressed, the opposite of showing happiness

Grammar Patterns

be + radiant

be + radiant + with + noun

radiant + noun (attributive)

Usage Note

Common in wedding descriptions and emotional contexts. Frequently takes the structure 'radiant with + (joy / happiness / health / love).'

Common Mistakes

She looked radiant of happiness.
She looked radiant with happiness.
The correct preposition after 'radiant' when describing the cause is 'with,' not 'of.'

2. sending out a bright, warm light or heat that spreads outward from the source.

2.adjectiveB2
Definition

sending out a bright, warm light or heat that spreads outward from the source.

Example

The morning sun cast a radiant light across the still lake.

radiant light — natural light source

Rin installed a radiant heating system under the bathroom floor tiles.

radiant heating — technical/physical use

Common collocations
  • radiant heat
  • radiant light
  • radiant energy
  • radiant heating
  • radiant beam
Synonyms
  • bright

    more general and everyday; does not suggest rays spreading outward

  • glowing

    suggests a steady, warm light rather than strong beams

  • luminous

    more formal; describes objects that emit or reflect their own light

Antonyms
  • dim

    lacking brightness or light

  • dull

    not shining or reflecting light well

Grammar Patterns

radiant + noun (attributive)

be + radiant

Usage Note

Often used attributively before nouns such as 'heat,' 'energy,' 'heating,' and 'light.' In everyday speech, 'bright' or 'glowing' are more common for describing ordinary light sources.

Common Mistakes

The fire gives radiant warmth.
The fire gives radiant heat.
'Radiant' pairs naturally with 'heat' and 'light,' but 'radiant warmth' sounds unnatural in English.

Word family

Synonym discussion

Sense: adjective/1

Radiant, beaming, glowing, and joyful all describe a person showing happiness, but they differ in intensity and physical suggestion. Radiant suggests an almost luminous happiness that seems to shine from within — it is the strongest and most visually vivid of the four. Beaming describes a broad, open smile that lights up the face, often in response to pride or pleasure, without implying a full-body glow. Glowing focuses on a warm, healthy look in the skin that comes from happiness, exercise, or good health rather than from a sudden emotional peak. Joyful is the most general term, describing a deep feeling of happiness that may or may not show visibly on the face. For example: 'The bride was radiant as she walked down the aisle' (glowing with emotion). 'Grandpa was beaming with pride at his grandson's graduation' (broad smile). 'After the hike, their faces were glowing with health' (healthy flush). 'The children were joyful as they opened their gifts on Christmas morning' (general happiness without a specific visible expression).

radiant ↗beamingglowingjoyful ↗

Common collocations

Nouns

  • radiant smile
  • radiant face
  • radiant beauty
  • radiant bride
  • radiant heat
  • radiant light
  • radiant energy
  • radiant heating
  • radiant beam

Adverbs

  • radiantly

Phrases

  • radiant with joy
  • radiant with health

Prepositions

  • radiant with (joy / happiness / health / love)

Etymology

LatinFrenchEnglish

The word 'radiant' comes from Latin 'radiantem', the present participle of 'radiare' meaning 'to shine, to emit rays.' The Latin root 'radiare' developed from 'radius', meaning 'a ray' or 'a beam of light.' English borrowed the word through French in the 1500s, first using it to describe literal light and heat from the sun or fire, then later extending it to metaphorically describe a person whose expression seems to shine with emotion.