untestable is a valid English word

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

Meanings

Adjective (COMPARABLE)

That cannot be tested; unverifiable

untestable is a Scrabble valid word

u1n1t1e1s1t1a1b3l1e1

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

untestable is an iScramble, QuickWords valid word

u1n2t3e4s5t6a7b8l9e10

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

Same letters words (Anagrams)

• UNSETTABLE

Same letters plus one

• BETULONATES
• BLANQUETTES
• CELEBUTANTS
• ENTABULATES
• ENTRUSTABLE
• TENTABULGES
• UNSTATEABLE
• UNTASTEABLE

Same letters minus one

• BETELNUTS
• BETULATES