To the best of
To the utmost extent of, especially of one’s ability, knowledge, or power. For example, I’m sure he’ll do it to the best of his ability, or To the best of my knowledge, they arrive tomorrow. [ c. 1500 ]
Read Also:
- To the bitter end  
see: bitter end
 - To the core  
see: rotten to the core
 - To the effect that  
see: to that effect
 - To the ends of the earth  
see: ends of the earth
 - To the eyes  
to the eyes
 
