ETYMOLOGY
perhaps from shrow (shrew, a wicked or malignant person), after frowardly
EXAMPLE
“… Now have I most unmanfully fallen foul upon some
Woman, I’le warrant you, and wounded her
Reputation shrowardly: Oh drink, drink! thou
Art a vile enemy to the civillest sort of curteous
Ladies. …”
From: The Comical Revenge, or, Love in a Tub
By George Etherege, 1664
Lexicophilia 