gad (2) — ODE

gad2 /ɡad

/ (also gads)

▸ noun archaic used in various expressions for emphasis or to express indignation, disbelief, amazement, etc.:

by gad, that's courage!

By Gad! You look young for a doctor!

ye gads, the long commute is gonna kill me.

▸ exclamation

1 archaic used for emphasis or to express indignation, disbelief, amazement, etc.:

it's a little retro, but gad, it is such a fun song to listen to

gads, I feel ancient.

2 Scottish English used to express strong distaste or disgust.

– ORIGIN early 16th century: alteration of God.