The phrase "like an absentminded professor" refers to someone who is forgetful, disorganized, and prone to losing focus. Antonyms for this phrase would describe a person who is sharp, attentive, and detail-oriented. Some antonyms for absentminded could be focused, alert, attentive, mindful, or conscientious.
Unlike an absentminded professor, a sharp individual pays close attention to details and tasks at hand. They are keenly aware of their surroundings and have an excellent memory for important information. They are goal-oriented and driven to succeed, making them productive and efficient in their work.
In summary, antonyms for the phrase "like an absentminded professor" describe individuals who are attentive and detail-oriented, in contrast to the forgetful and disorganized characteristics of an absentminded person.