Having been obtained with a great deal of effort.

(slang) Money that one owns.

plural of hard launch

A means of launching a guided missile, where the missile's rocket engine is ignited while still inside the launch assembly or tube.

plural of hard atheist

An atheist who explicitly asserts that no deities exist.

(of a living being) To die only after a desperate struggle for life. / (of a custom, idea etc) To be slow in changing or disappearing.

Alternative form of hardworking

(astronautics) An explosion in a rocket engine during startup, usually due to the presence of too much propellant prior to ignition.

(live action role-playing games) As a roleplayer, of a skill that one's character has, to carry that skill out literally.