Re: About negations (1)
More or less!
1. I couldn't agree more.
I (literally) agree with you as much as is possible, I agree with you completely.
2. You couldn't be better off, could you?
It is (figuratively) impossible for you to be any richer. (This could not be literally true since even the richest person can acquire more money)
3.Nothing is farther from the truth.
It is very wrong.
Many writers since the Middle English period have used farther and further interchangeably. A relatively recent rule, however, states that farther should be reserved for physical distance and further for nonphysical, metaphorical advancement.
Manchester is farther away from London than Birmingham.
I hit the golf ball farther than anyone else.
Nothing is further from the truth than what John accuses me of.