The phrase "begs to be excused" typically signifies a desire to be released from a situation or responsibility. Antonyms for this phrase could include "eager to participate," "willing to continue," or "enthusiastically engaged." Those who are eager to participate are often looking for ways to become more involved and contribute to the group effort. Those who are willing to continue are committed to seeing a task through to completion, even in the face of difficulty or adversity. Finally, those who are enthusiastically engaged are passionate about their work and eager to see it succeed, even if it means accepting challenges along the way.