relentless
/ɹɪˈlɛntləs/adjective
relentless is spelled R-E-L-E-N-T-L-E-S-S: 10 letters and 3 syllables. It appears 3.2 times per million words in written English, the 14,731st most frequent word form (wordfreq, 2021 data). As an adjective, relentless means “Unrelenting or unyielding in severity” (English Wiktionary, September 2026).
How many letters and syllables are in relentless?
| Letters | 10: R-E-L-E-N-T-L-E-S-S |
|---|---|
| Syllables | 3 (from its American pronunciation) |
| In writing | 3.2 times per million words; the 14,731st 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 relentless?
Relentless appears 3.2 times per million words in written English, the 14,731st 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 relentless?
- /ɹɪˈlɛntləs/
Relentless 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). Recordings: LL-Q1860_(eng)-Vealhurl-relentless.wav, Wikimedia Commons (author and licence on each file's page).
Forms of relentless
- more relentless comparative
- most relentless superlative
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does relentless mean?
The meanings the English Wiktionary records, quoted as written there (source below).
adjective
- 1
Unrelenting or unyielding in severity.
- 2
Steady and persistent; unremitting.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Relentless in Spanish, French, German and Portuguese
| Language | Words |
|---|---|
| French | implacable, impitoyable , tenace |
| German | unnachgiebig, unbarmherzig, unnachsichtig, unerbittlich , unablässig, unermüdlich |
| Portuguese | implacável , inexorável |
| Spanish | no relenteciente, implacable , tenaz |
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does relentless come from?
From relent + -less.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).