The phrase "bore hard on" means to press down or apply pressure with force. Some antonyms for this phrase include "lift off", "ease up", "release", and "untighten". When you lift off, you are removing pressure or weight from a surface. Easing up suggests a reduction in the amount of pressure applied. Releasing implies letting go or relaxing the grip. Untightening refers to loosening a grip or reducing the tension. Antonyms for "bore hard on" can be useful in a variety of situations where less pressure is necessary, such as releasing a tight grip or lifting a heavy object.