"under performer" is a correct and commonly used phrase in written English.
It is often used to describe someone who is not meeting expectations or not performing as well as others. Example: The company's management team decided to let go of the under performers and bring in new talent to boost productivity.
According to his father, Peter, his son has been an under performer.
Many may not realize it, but Bloomberg predicts that the Philippines will be the second fastest growing economy in the world in 2015 -- a stunning achievement for a country that has for many years been considered an under performer.
In fact, it was the initial wave of 'holy crap, this is great!' reviews that led idiot prognosticators to exclaim that it had a chance at out grossing Titanic, which led to the narrative that it was a financial under performer.
Too many leaders spend so much time dealing with under-performers that they don't pay enough attention to the people performing well until those people walk in to announce they're leaving.
A deliberate under-performer?
He was a notable under-performer when bequeathed to Redknapp.
To describe Pakistan as an under-performer in education would be an epic understatement.
Stosur has been a notorious under-performer during the January home swing of the international season.
Henrikh Mkhitaryan, a perennial under-performer under Klopp relative to his amazing skill-set, has been superb so far.
It seems crueler still that Geale – an 11-year pro, Olympic veteran and world titlist – will be remembered by American fans as an under-performer and a quitter.
Hazard deconstructed his tag as under-performer-in-chief, spinning away from Charlie Adam in the centre of the pitch and surging up-field before feeding Costa in the inside left channel.
