Noun
sore point (plural sore points)
(idiomatic) An action, belief, or state of affairs which is an enduring basis for disagreement or dissatisfaction.
Synonyms: bone of contention, bone to pick, point of contention
Heavier, more permanent and more regressive than the poll tax proper, the intrusive entry of tax inspectors into private homes to count hearths was a very sore point, and it was promptly repealed with the Glorious Revolution in 1689. Source: Internet
The Conservatives' relationship to the EPP would become a sore point in the following years, particularly for the eurosceptic general membership in Britain. Source: Internet
American support for Kurdish fighters in Syria has become a major sore point in relations between the U.S. and Turkey. Source: Internet
But the prosecution of the 83-year old Mubarak remained a sore point under the new leadership. Source: Internet
The 1982 Falklands War is still a sore point for Argentina. Source: Internet
For as long as I can remember this issue has always been a sore point for me. Source: Internet