/dawg"gawn", -gon", dog"-/ , v.t., doggoned, doggoning , adj., superl. doggonest , adv. Informal.
v.t.
1. to damn: Doggone your silly advice!
adj.
2. Also, doggoned . damned; confounded: a doggone fool; Well, I'll be doggoned.
adv.
3. Also, doggoned . damned: He's a doggone poor sport.
[ 1850-55, Amer.; perh. from dog on it! euphemistic alter. of God damned ]