If

Meaning of Old Norse word "if"

As defined by the Cleasby & Vigfusson Old Norse to English dictionary:

if

ifa, and derivatives, see ef, efa, p. 115.

Possible runic inscription in Younger Futhark:ᛁᚠ
Younger Futhark runes were used from 8th to 12th centuries in Scandinavia and their overseas settlements