galling

From gall +‎ -ing. The adjective follows from the verb.

galling (comparative more galling, superlative most galling)

1. vexing, humiliating
   • 2014, Daniel Taylor, "World Cup 2014: Uruguay sink England as Suárez makes his mark," guardian.co.uk, 20 June:

     Uruguay were quick to the ball, strong in the tackle and seemed intent on showing they were a better team than had been apparent in their defeat to Costa Rica. Yet the most galling part for England is that they helped them on their way.

galling (uncountable)

1. Wear caused by adhesion between sliding surfaces.

galling

1. present participle of gall

• gingall