unalterable is a valid English word

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

Meanings

Adjective (COMPARABLE)

Incapable of being altered, or of changing.
Irreversible, irrevocable.

unalterable is a Scrabble valid word

unalterable

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

unalterable is an iScramble, QuickWords valid word

unalterable

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

Same letters words (Anagrams)

• UNALERTABLE
• UNRELATABLE

Same letters plus one

• UNTRAVELABLE

Same letters minus one

• UNRATEABLE
• UNTEARABLE