adjective, spoon·i·er, spoon·i·est.
Examples from the Web for spooney
Moses, ain't she a slap-up girl, and ain't they just spooney!The New Tenant|E. Phillips Oppenheim
You really were rather a spooney; you married as a starving man snatches a loaf.Cousin Betty|Honore de Balzac
Could it be young Spooney, who was ruined in that Rotten-Iron affair?
That philosopher was playing whist with his friends, and gave as his opinion that Ralph was "spooney."Bohemian Days|Geo. Alfred Townsend
He's the best and dearest fellow in the world; but I'm ashamed to say he's spooney enough to like lemonade and tea.Hide and Seek|Wilkie Collins