f is the sixth letter of the english alphabet, and a nonvocal consonant. its form and sound are from the latin. the latin borrowed the form from the greek digamma /, which probably had the value of english w consonant. the form and value of greek letter came from the phoenician, the ultimate source being probably egyptian. etymologically f is most closely related to p, k, v, and b; as in e. five, gr. pe`nte; e. wolf, l. lupus, gr. ly`kos; e. fox, vixen ; fragile, break; fruit, brook, v. t.; e. bear, l. ferre. see guide to pronunciation, // 178, 179, 188, 198, 230.-the name of the fourth tone of the model scale, or scale of c. f sharp (f /) is a tone intermediate between f and g.