do (one's) damndest

do (one's) damndest

To put forth the maximum amount of energy or effort toward some task or goal. Money is a little tight at the moment, but I'll do my damndest to be there for your wedding. I'm doing my damndest to get a passing grade in this class.
See also: damndest
Farlex Dictionary of Idioms.
See also:
  • damndest
  • try (one's) damndest
  • darndest
  • do (one's) darndest
  • break a sweat
  • bend (one's) efforts
  • bend your mind/efforts to something
  • apply
  • apply (oneself) to (something)
  • apply to