by far

1 - By far the most numerous animals on earth are the insects.

2 - By far the most common sleep complaint is insomnia.

3 - Epidemiologists know that the virus is by far the leading cause of human disease worldwide, infecting virtually all children before the age of 5.

4 - We've had some pretty good directors over the years but Dr. Radcliff is by far the most capable of them.

5 - Communication is by no means a human monopoly, although our languages make possible by far the most detailed and subtle forms of communication that we know of.