to disgruntle, to put into a sulky dissatisfaction or ill humour, to make discontented ...1689 obs. rare
from dis- + 'grubble' perhaps for 'grumble'
FIRST DOCUMENTED USE
1689 - see Example below
"...It is reported Sr Rt Atkins is soe disgrubbl'd not to be
Ch. J. of ye Com. Pleases yt he sath he will not have his
brothers scimm milke."
From: Correspondence of the Family of Hatton
Being chiefly letters addressed to Christopher
first Viscount Hatton 1601-1704.
Letter: April 16, 1689
• A New English Dictionary on Historical Principles,
James Murray, 1887-1933