You are oncommon in some things.

You're oncommon small.

Likewise you're a oncommon scholar." "No, I am ignorant and backward, Joe." "Why, see what a letter you wrote last night! Wrote in print even! I've seen letters--Ah! and from gentlefolks!--that I'll swear weren't wrote in print," said Joe.
"I have learnt next to nothing, Joe.

You think much of me.

It's only that." "Well, Pip," said Joe, "be it so or be it son't, you must be a common scholar afore you can be a oncommon one, I should hope! The king upon his throne, with his crown upon his ed, can't sit and write his acts of Parliament in print, without having begun, when he were a unpromoted Prince, with the alphabet .-- Ah!" added Joe, with a shake of the head that was full of meaning, "and begun at A.too, and worked his way to Z.
And I know what that is to do, though I can't say I've exactly done it." There was some hope in this piece of wisdom, and it rather encouraged me.
"Whether common ones as to callings and earnings," pursued Joe, reflectively, "mightn't be the better of continuing for to keep company with common ones, instead of going out to play with oncommon ones,--which reminds me to hope that there were a flag, perhaps ?" "No, Joe." "(I'm sorry there weren't a flag, Pip).