The phrase "under timed" refers to an action or task that has been performed or completed within a limited amount of time. Some synonyms for "under timed" include "within the deadline," "within the timeframe," "within the allotted time," "within the given time," "within the prescribed time," and "within the stipulated time." These synonyms are commonly used in time-sensitive contexts such as project management, event planning, and deadline-driven industries. It is important to meet deadlines and complete tasks under time constraints to ensure efficiency and success in various aspects of life.