unforgivable
adjectivemasculine/feminine/ĩpɨɾˈdoɐvɨɫ/medium
im·per·do·á·vel
Definition
That cannot or does not deserve forgiveness; inexcusable.
It was an unforgivable mistake on his part.
Your negligence is unforgivable.
Common collocations
unforgivable errorunforgivable actunforgivable betrayal
Etymology
Do prefixo 'im-' (negação) + 'perdoável', de 'perdoar', do latim 'perdonare' (conceder totalmente).