The most common and most likely answer to this crossword clue is the 7 letter word GEORDIE
I've seen this crossword clue in The Daily Telegraph
G
E
O
R
D
I
E
More clues leading to the result GEORDIE
- Northern chap say will turn on soldiers before long
- Late king finally coming out for princess, a northerner
- Dialect needing good English at all costs?
- The last king taking in princess for good of Tyneside
- From part of England, say, needing to go back or go west
- A helping of porridge, or diet for a northerner
- Northerner‘s rendering of ‘Ogre, meet thine end’
- Regional native consumed by binge or dieting
- Expression of surprise about partially standard dialect
- One from Tyneside taking part in binge or dieting?
Buddy explains!
The straight part
We know that "of Tyneside" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case of tyneside = geordie.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.