plug away

present singular third person plugs away · participle present plugging away · participle past plugged away · past plugged away

1. informalTo persist or continue, as with an effort.

   He kept plugging away at the work until it was done.

   1 more example

   The end is nigh (or at least it was supposed to be), but the Pacers in northern England kept plugging away providing a service while awaiting the much-delayed arrival of their replacements.

   2020 May 20, John Crosse, “Soon to be gone... but never forgotten”, in Rail, page 63, photo caption