East Anglia and Essex,
Shanny means scatter-brained or foolish. It is equivalent to 'duzzy' and 'diddy', other Norfolk dialect words meaning silly or foolish.
Note: In North Norfolk, shanny can also mean high-spirited and unruly.
"That new friend o' yarn, she be a shanny sort of flart."
"Your new friend is a scatter-brained fool."
Submitted November 2020