relentless is a valid English word

Scrabble validity: valid ( international - Sowpods, US - Twl06 )
iScramble validity: valid
QuickWords validity: valid

Meanings

Adjective (COMPARABLE)

Unrelenting or unyielding in severity.
Unremitting, steady and persistent.

relentless is a Scrabble valid word

relentless

• International English (Sowpods) - The word is valid in Scrabble ✔
• US English (TWL06) - The word is valid in Scrabble ✔
• 00 points

relentless is an iScramble, QuickWords valid word

relentless

• The word is valid in iScramble ✔
• The word is valid in QuickWords ✔
• 00 points

Same letters words (Anagrams)

• none

Same letters plus one

• STELLERINES

Same letters minus one

• TRELLESES