The phrase "best efforts" means to try your hardest and do your absolute best in order to achieve a goal. It shows dedication and commitment to giving it your all. Full definition
Despite best efforts by collection agencies, most of the individuals and companies remain out of reach of law enforcement. (bitcoinist.com)
Learning about their developmental milestones such as average height of a 4 year old and average height of a 5 year old, can help you make better efforts to assist them to grow. (newkidscenter.com)
The author / publisher has used best efforts in preparation of this article. (toughnickel.com)