Deddly

adj.

Brilliant.

In use

Dat ting over dayer is deddly ihinnit boy!

Let Lawrence Muck translate it to posh English for you
Lawrence Muck

Hello there, I was just reading Wordsworth. Would you like me to translate 'Deddly' in use for you?

That item over there is positively splendid, is it not, old boy!