Being prompt and punctual is the antonym for the phrase "being dilatory." Procrastination, tardiness, and sluggishness are common traits associated with dilatory behavior. In contrast, being prompt and punctual refers to the ability to act promptly and without delay. It is a desirable trait that is valued in many workplaces, as it brings efficiency to work processes and helps to ensure that deadlines are met. Conscientiousness, being bustling, and being expeditious are some other antonyms for dilatory behavior. Being diligent, efficient, and proactive can help individuals avoid being dilatory and enable a more productive lifestyle.