No, mortal sin can be absolved. Mortal sin is a sin that concerns a grave matter and is committed intentionally. The traditional list of cardinal mortal sins are Pride, Envy, Wrath, Sloth, Lust, Avarice, Gluttony. The other kind is venial, that is a sin done without intending to sin. Venial sins do not have to be formally absolved at confession.
Question I do not know the answer to so I ask...when was it determined that a mortal since, as you listed, Pride, Envy, Wrath, Sloth, Lust Avarice (not sure what this is?) and Gluttony are unforgivable?
I don't recall in scripture that being described...the only sin i recall being mentioned as being unforgivable was a sin against the Holy Spirit...
Scenario...I'm wondering if this is what is meant by your post...If those sins you listed are not forgivable it seems to me that just about every single person on this planet that is and has ever live could not be forgiven...those listed sins cover a ton of acts we do and very often intentionally...for instance...let's say a woman goes to a movie because she thinks Johnny Depp is hot and has "thoughts" of him and her together in a sexual manner...she is now condemned forever because you say this sin is unforgivable? Am I mis reading what you posted or is that an accurate conclusion of what you meant to say?
Just curious...thanks!
Blessings in Christ...