lightfastness
noun
lightfastness is spelled L-I-G-H-T-F-A-S-T-N-E-S-S: 13 letters and 3 syllables. It appears about once in every 79 million words in written English, the 282,993rd most frequent word form (wordfreq, 2021 data). As a noun, lightfastness means “The quality or degree of being lightfast” (English Wiktionary, September 2026). The plural of lightfastness is lightfastnesses.
How many letters and syllables are in lightfastness?
| Letters | 13: L-I-G-H-T-F-A-S-T-N-E-S-S |
|---|---|
| Syllables | 3 (from its American pronunciation) |
| In writing | about once in every 79 million words; the 282,993rd most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation and the CMU Pronouncing Dictionary; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is lightfastness?
Lightfastness appears about once in every 79 million words in written English, the 282,993rd most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How do you pronounce lightfastness?
Lightfastness has 3 syllables (counted from its American pronunciation in the CMU Pronouncing Dictionary).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Forms of lightfastness
- lightfastnesses plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does lightfastness mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
The quality or degree of being lightfast.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Where does lightfastness come from?
From lightfast + -ness.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).