The phrase "am remiss" means to be neglectful or careless in one's duties or responsibilities. Antonyms for this phrase include diligent, responsible, attentive, conscientious, and meticulous. Being diligent in one's responsibilities involves being careful, persistent, and dedicated to completing tasks adequately. Being responsible means taking ownership of one's duties and obligations and ensuring they are fulfilled. Attentiveness involves paying close attention to details and staying focused on the task at hand. Being conscientious involves being meticulous, thorough, and reliable in one's work. In contrast, being remiss suggests a lack of care, attention, or diligence, so the opposite of this would be the above-mentioned antonyms.