cornerstone is a valid English word

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

Meanings

Noun (COUNTABLE)

A stone forming the base at the corner of a building.
Such a stone used ceremonially, often inscribed with the architect's and owner's names, dates and other details.
• The cornerstone on the Flatiron Building is set on the Fifth Avenue facade.
(figuratively) That which is prominent, fundamental, noteworthy, or central.
• Exceptional service is the cornerstone of the hospitality industry.

cornerstone is a Scrabble valid word

cornerstone

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

cornerstone is an iScramble, QuickWords valid word

cornerstone

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

Same letters words (Anagrams)

• NONSECRETOR

Same letters plus one

• CORNERSTONES
• NONSECRETORS
• NONSECRETORY
• RECONNECTORS
• RECONNOITERS
• RECONNOITRES

Same letters minus one

• RENCONTRES
• TERCEROONS