captcha is a valid English word

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

Meanings

Noun (COUNTABLE)

Singular Plural
CAPTCHA CAPTCHAs
    A computerized test requiring the human user to perform a task deemed to be difficult to automate, such as entering a displayed series of distorted characters or describing images, to demonstrate that they are a human and not a computer program.

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captcha is not a Scrabble valid word

captcha


captcha is not an iScramble, QuickWords valid word

captcha


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Same letters words (Anagrams)


Same letters plus one


Same letters minus one