diehard is a valid English word

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

Meanings

Adjective (COMPARABLE)

Unreasonably or stubbornly resisting change.
Fanatically opposing progress or reform.
Complete; having no opposite opinion of anything in a particular topic of one's values; thorough of in one's beliefs.
• For a Roman Catholic teacher, he sure is a diehard fundamentalist.

Noun (COUNTABLE)

A person with such an attitude.

diehard is a Scrabble valid word

diehard

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

diehard is not an iScramble, QuickWords valid word

diehard

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

Same letters words (Anagrams)

• DIHEDRA

Same letters plus one

• DEHAIRED
• DIEHARDS
• DIHEDRAL
• DIRTHEAD
• HAIRDOED
• RAWHIDED
• REIDHEAD
• ROIDHEAD

Same letters minus one

• ADERID
• ADHDER
• ARDEID
• ARIDED
• DEHAIR
• HADDER
• HADDIE
• HAIDER
• HAIRED
• HARDIE
• HAREDI
• IDARED
• RAIDED