superhard is a valid English word

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

Meanings

Adjective (COMPARABLE)

Having a very high hardness.
Highly strengthened against attack.
• a superhard missile silo
(not comparable mineralogy) Having a hardness between that of boron nitride and that of diamond.

Noun (COUNTABLE)

(motorsports) A tyre whose compound is harder than a normal hard tyre.

superhard is not a Scrabble valid word

s1u1p3e1r1h4a1r1d2

• International English (Sowpods) - The word is not valid in Scrabble ✘
• US English (TWL06) - The word is not valid in Scrabble ✘
• 15 points

superhard is not an iScramble, QuickWords valid word

s1u2p3e4r5h6a7r8d9

• The word is not valid in iScramble ✘
• The word is not valid in QuickWords ✘
• 45 points

Same letters words (Anagrams)

• none

Same letters plus one

• SUPERHARDS

Same letters minus one

• PHAEDRUS