Green’s Dictionary of Slang

(US) discomfited, defeated; confused.

1838		T. Haliburton Clockmaker II 150: If he didn’t look bumsquabbled it’s a pity.
1872		Schele De Vere Americanisms 581: Bamsquabbled, first used in the ‘Legend of the American War,’ and expressing discomfiture, is an evidently manufactured word, and but rarely heard except in humorous writings.