mastermind is a valid English word

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

Meanings

Noun (COUNTABLE)

A person with an extraordinary intellect or skill that is markedly superior to his or her peers.
A person responsible for the highest level of planning and execution of a major operation.

Verb

To act in the role of mastermind.

mastermind is a Scrabble valid word

m3a1s1t1e1r1m3i1n1d2

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

mastermind is an iScramble, QuickWords valid word

m1a2s3t4e5r6m7i8n9d10

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

Same letters words (Anagrams)

• MINDSTREAM

Same letters plus one

• DISARMAMENT
• MASTERMINDS
• MEMORANDIST
• MINDSTREAMS
• MODERANTISM
• SEMIDORMANT
• TRANSMEDIUM

Same letters minus one

• MIDSTREAM
• TERINDAMS