Standard Lemma guide

lightfast

adj · 1 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • US: /ˈlaɪtfæst/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • CMU ARPABET: L AY1 T F AE2 S T Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

adj

Meaning 1

Resistant to fading.

Definition source: English Wiktionary via Wiktextract

Examples

  • Verdigris is lightfast in oil paint, as numerous examples of fifteenth-century paintings show.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From light + fast. Compare Icelandic litfast (“colourfast”).

Across languages

Translations

7 source translations are retained for this English entry.

  • Finnish: valonkestävä — resistant to fading
  • German: lichtecht — resistant to fading
  • Russian: светостойкий (svetostojkij) — resistant to fading
  • Russian: светопрочный (svetopročnyj) — resistant to fading
  • Spanish: no desteñible — resistant to fading
  • Ukrainian: світлостійки́й (svitlostijkýj) — resistant to fading
  • Vietnamese: bền — resistant to fading