clumsiest

clum-si-est

adjective

Having the most awkward movements or handling of objects, often causing accidents.

"She was the clumsiest person I'd ever met."

Thesaurus

Synonyms: awkward, inapt, inept, cumbersome, infelicitous, ill-chosen, clumsy, bunglesome, ungainly, unwieldy, unmanageable, fumbling