quadruple is a valid English word

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

Meanings

Adjective (NOT COMPARABLE)

Being four times as long, as big or as many of something.
• He's quite an athlete and can do quadruple jumps with ease.

Verb

(transitive) To multiply by four.
• Quadrupling four gives sixteen.
(intransitive) To increase by a factor of four.
• Our profits quadrupled when we made the improvements.
(rail) To provide four parallel running lines on a given stretch of railway.

Noun (COUNTABLE)

Something that is four times the usual number, amount, size, etc.
(skating) A figure-skating jump with four revolutions in the air.
• Synonym: quad

quadruple is a Scrabble valid word

quadruple

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

quadruple is an iScramble, QuickWords valid word

quadruple

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

Same letters words (Anagrams)

• QUADRUPEL

Same letters plus one

• QUADRUPELS
• QUADRUPLED
• QUADRUPLES
• QUADRUPLET
• QUADRUPLEX
• QUADRUPOLE

Same letters minus one

• none