As defined by A Concise Dictionary of Old Icelandic (Geir Zoëga):
apa Old Icelandic word can mean:
- (að), v. to mock, make sport of, to befool (margan hefir auðr ~t);
- refl., ~st at e-u, to become the fool of.
Possible runic inscription in Younger Futhark:ᛅᛒᛅ