different between unkiss vs unkist

English

un- +? kiss

unkiss (third-person singular simple present unkisses, present participle unkissing, simple past and past participle unkissed)

(obsolete) To cancel or annul something that was done or sealed with a kiss.
Richard II, Act V - Shakespeare
Let me unkiss the oath 'twixt thee and me.

un- +? kist

unkist (not comparable)

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