holy mackerel

Definition

An expression of surprise.

Etymology

Recorded from 1803 with uncertain origin, but possibly a euphemism for Holy Mary, with Mackerel being a nickname for Catholics because they ate the fish on Fridays. Another suggested explanation is the practice of selling mackerel on Sundays in the seventeenth century (because its quality deteriorates rapidly), so it was known as holy fish.

Example Sentences

• "‘Holy mackerel!’ he whispered. ‘Englehorn! Driscoll! Get a look at this thing.’"
• "Holy Mackerel! Here Comes the Bride!""
• ""Holy mackerel! Just any old dumb hag who can cook and lie on her back?""