"acknowledged partner" is a correct and usable phrase in written English.
It means a partner who is widely recognized or accepted as such. Example: John was an acknowledged partner in the company, having been instrumental in its growth and success over the years.
She acknowledges partner and co-collaborator Jeremy Greenspan of Junior Boys and an appreciation for eclectic voices of singers like Mick Jagger for instilling in her the confidence to break further away from her past as a trained jazz musician, having studied performance and piano at Montreal's McGill University.
That set the stage for battle, especially when Bishop Robinson, with an acknowledged male partner, was consecrated by the American church in 2003.
The prevalence of STI (3.5 4.3%) was similar in both HRA sub-cohorts and the primary care sub-cohort requiring for inclusion only one acknowledged sex partner during the prior month.
I assume most of my publically acknowledged sex partners will be happy to contribute.
The important role played by the Deputy Representative and the emergency team was acknowledged by partners and other organisations, as their capacity to raise awareness on humanitarian challenges and principles.
When we've formed this type of bond, being kind to our partner actually threatens to disrupt the sense of safety we experience from this defense, because it forces us to acknowledge our partner as a separate person.
As I rapidly reach that moment when the constant fears about the beating being taken by my personal pension pot (milk jug, more like it) have to be replaced by a sober calculation of whether household expenditure will laugh at income's pretensions to meet it on equal terms, I freely acknowledge that Partner and I also long for a (perhaps downsized) place of our own.
After acknowledging his partner in Mosaic, Eric Bina, who "co-wrote the original code for Mosaic with me — specifically all the difficult parts," he also gave a hat-tip to Larry Smarr, Joe Hardin, and colleagues at NCSA and the University of Illinois at that time.
In this example, you're acknowledging your partner's enjoyment of something, without sharing the same sentiment.
