unwieldy
definition
difficult to carry or manage because of size, shape, or complexity
example
The large, unwieldy box was difficult to maneuver through the narrow doorway.
synonyms
awkwardcumbersomebulky
word origin — Middle English 'unwieldy', from 'un-' meaning 'not' + 'wieldy', from Old English 'wielldan', meaning 'to be able to handle or manage'