The term 'maximum effort' is a phrase used to describe the highest level of effort that can be put into a task. It is often used in the context of work, where it implies that an individual should strive to give their best effort in order to achieve the desired outcome. The crossword solutions for this term are ALL (3 letters) and UTMOST (6 letters). All is an adjective meaning 'the whole amount or quantity' while UTMOST is an adjective meaning 'of the greatest or highest degree or amount'. Together, these two words convey the idea of maximum effort, which is the highest level of effort that can be put into a task.