One possibility would be 4+4+4+sqrt(4) (square root). You're technically using 41/2 in that case, which means you're using a number other than 4, but I don't think there's any other possible way to make it work using purely arithmetic operations.
yrs
44-4/4
44 divided by .44
4+4-(4/4)
The answer is 4! - [(4+4)/4]
(4x4)-(4/4) = 15
4+4+(4-4) = 4
4!/4 - 4/4 = 5
4!+(4+4!)/4
4! - sqrt 4 + 4/4
4+4+4x4 by the power of 0.
4+4+4+(4/4)+(4/4) = 14 :) 4+4+4=12 4/4 = 1 4/4 = 1 12+1+1=14