Meaning

adjective difficult to use or handle or manage because of size or weight or shape

adjective difficult to work or manipulate

adjective lacking grace in movement or posture

originFrom Middle English unweldy, equivalent to un- + wieldy. Cognate with Old Frisian unweldich, unweldech (“having no power, involuntary”), Middle Dutch onweldich (“having no control or mastery over”), Middle Low German unweldich (“unwieldy”). Compare also Old High German unwaltīg (“powerless”), whence Middle High German unwaltic, German ungewaltig (“powerless, unmighty”).

Etymology from Wiktionary, CC BY-SA 3.0