Early 19th century; earliest use found in Duke of Wellington (1769–1852), army officer and prime minister. From French à fond completely, thoroughly from à to + fond bottom, depth.
Definition of à fond in US English:
à fond
adverba ˈfɒ̃
Thoroughly, in depth.
Origin
Early 19th century; earliest use found in Duke of Wellington (1769–1852), army officer and prime minister. From French à fond completely, thoroughly from à to + fond bottom, depth.