The phrase "absolute and unconditional" is correct and can be used in written English.
It is often used to describe something that is complete and without any conditions or limitations. Example: The defendant was sentenced to absolute and unconditional life imprisonment for his heinous crimes.
It is a sense that there is an absolute and unconditional value to the simple fact of existence.
St. Francis demanded of his followers an absolute and unconditional renunciation of all property.
They only profess absolute and unconditional love and adoration for their children.
With all of their rules and restrictions, laws and codes, ultimately cults are about grasping and preserving absolute and unconditional control.
"Cardinals are entrusted with the service of love: love for God, love for his Church, an absolute and unconditional love for his brothers and sisters, even unto shedding their blood, if necessary (in defence of the faith)," the pope told the new cardinals before giving them their rings and red birettas, or hats.
A new humanity, matured through the pain of a long history of war in which each person was so entangled, can be resurrected; set upright by its rediscovered faith in itself, strengthened by its absolute and unconditional, 'No' to any form of violence.
Mrs. Dees faced dramatic challenges, but in her love, tenacity, and absolute unconditional dedication to Walter she was far from alone.
I never wanted the responsibility of children, yet this min pin taught me much about being responsible and accountable, and I learned how to give and receive absolute unconditional love.
"My love for him is unconditional and absolute and I'm grateful to God that he's been brought home to his family, me, his home, his country".
The primary responsibility is that of the sovereign state itself to its own people – one that is absolute, unconditional, and continuing – not to perpetrate or allow atrocity crimes on its territory (the so-called 'Pillar I'Pillar
My fellow advisory-council members have now been deprived of the opportunity to question me about what they might see as the contradiction of my policy views and my absolute unconditional acceptance of every member of the human family.
