adjective British Dialect.
Origin of muckle
Examples from the Web for muckle
The up-train stops at Lone, at a quarter past twal, sir, and seldom varies for as muckle as twa minutes.The Lost Lady of Lone|E.D.E.N. Southworth
I've seen lassies makkin' themsels sma' for lads often enough, but I never saw ane 'at prigged so muckle wi' her ain brother.A Window in Thrums|J. M. Barrie
It was a' my grannie's doin', God bless her—for weel he may, an' muckle she needs 't.'Robert Falconer|George MacDonald
Mebbe, Maister Smuth, if we wad have had a dram afore ye wass lettin' doon yer line, we micht have grappit that muckle fush!Mr. Punch With Rod and Gun|Various
He shouted with all his power, but the wind whirled away Muckle Alick's cries as though they had been baby Gavin's.Cleg Kelly, Arab of the City|S. R. (Samuel Rutherford) Crockett