from Wiktionary, Creative Commons Attribution/Share-Alike License
- adv. Like a dunce.
Sorry, no etymologies found.
(the precursor to the School meal program) where the task of making the milk (Klim) was assigned to the boys who were considered "duncy", they used to make the milk sweet so many boys would have problems after which would be evident if you visited the common bathroom with the chains to flush.
There was a rhyme many of us would say, "go to skool you duncy fool and let the teacha geh yuh de rule."
Those who were not quick to grasp were called duncy.