The Collaborative International Dictionary
Unbeseemingly
Unbeseeming \Un`be*seem"ing\, a. [Pref. un- not + beseeming.] Unbecoming; not befitting. -- Un`be*seem"ing*ly, adv. -- Un`be*seem"ing*ness, n.
Wiktionary
unbeseemingly
adv. (context archaic English) In an unbeseeming manner.