VERY EFFICIENT' The term 'very efficient' can be summarized as having the ability to accomplish a task with minimal effort and resources. This term is often used to describe a person or process that is able to achieve a desired outcome with minimal waste of time, energy, or resources. The crossword solution for this term is 'LEAN', which is an acronym for 'Low Effort, Achievable, Necessary'. This acronym emphasizes the idea of efficiency by focusing on the need to use only what is necessary to achieve the desired outcome.