as far as

I. conjunction Date: 14th century to the extent or degree that <

is safe, as far as we know

> — often used in expressions like “as far as (something) goes” and “as far as (something) is concerned” to mean “with regard to (something)” <

we felt pretty safe as far as the fire was concerned — Mark Twain

> or in expressions like “as far as (someone) is concerned” to mean “in (someone's) opinion” <

as far as I'm concerned, it's a mistake

> II. preposition Date: 1523 with regard to ; concerning <

neatly groomed and, as far as clothes, casual looking — New York Times

> <

as far as being mentioned in the Ten Commandments, I think it is — Billy Graham

> — chiefly in oral use