"unwavering love" is correct and usable in written English. It is an expression used to describe a love that is constant and unchanging. For example, "Even after all these years, his unwavering love for me has never faltered."
@sassysmart: Redemption through an unwavering love.
Through abundant hardship and devastating personal loss, Kathy is sustained by her husband's unwavering love.
Sticking by someone as they endure tumultuous times is a sign of ultimate, unwavering love.
But as hard-nosed as Emma can be, she signals that behind the severity is a protective, unwavering love.
All who were fortunate enough to know him will miss his quiet, steady presence and unwavering love.
I can do anything but cook, because even the unwavering love of my mother can't hide an unsophisticated palate.
And equally important as identifying housing, is providing these families with the unwavering hope, love, guidance, and encouragement they need to succeed.
Prison teaches him the lesson of a lifetime: No matter what cards life has dealt you, no matter what mistakes you have made in your past, there is power to be found in embracing God's unwavering, constant love for you.
I can't thank his Apple Family enough for their unwavering support, love, respect and admiration for Justin.
I told him how loved he was, and thanked him for giving me such happiness and for his unwavering companionship and love.
Susan's most significant accomplishment was her unwavering dedication and love for her family.
When I feel like I can't trust my brain 100%, Ludwig really comes in handy. It makes me translate and proofread faster and my output more reliable.
Claudia Letizia
Head Translator and Proofreader @ organictranslations.eu