ABY and GABY

ABY means "to pay the penalty for" and is from Scotland. ABOUGHT, ABYING, and ABYS are its conjugations.

But guess what! It can also be spelled ABYE. Also ABYES.

Put a G at the beginning of ABY, and you get GABY.

A GABY is a dolt (also from Scotland). GABIES means more than one dolt.