This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

v. To retract (something said).

v. To withdraw, retract (something said).

v. To not have said (since this is physically impossible usually in the subjunctive, as I wish I could unsay).

v. To recant or recall, as what has been said; to refract; to take back again; to make as if not said.

To recant or recall after having been said; retract; take back: as, to unsay one's words.

v. take back what one has said

"I cannot unsay them -- but at least I can clean up the toxic waste I've left behind."

unsaid    unsaying    unsays   

repudiate    disown    renounce   

unspeak    retract   

unsaid   

refract    recall   

deniable    unrenowned    unanswered    unstated    unhonored    supportable    unaccused    unimagined    question    unrecorded