This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Difficult to carry or manage because of size, shape, weight, or complexity: an unwieldy parcel; an unwieldy bureaucracy.

adj. lacking strength; weak

adj. ungraceful in movement

adj. difficult to carry, handle, manage or operate because of its size, weight, shape or complexity

adj. badly managed or operated

adj. Not easily wielded or carried; unmanageable; bulky; ponderous.

Movable or moving with difficulty; unmanageable from size, shape, or weight; lacking pliability: as, an unwieldy hulk; an unwieldy rock.

adj. difficult to work or manipulate

adj. difficult to use or handle or manage because of size or weight or shape

adj. lacking grace in movement or posture

"(Compare that with the approach of the Federal Communications Commission, which allows only limited searching of filings and comments; or that of the Department of Justice, which puts out data on foreign lobbying in unwieldy PDF format and binders.)"

impractical    bunglesome    awkward    ungainly    cumbersome    clumsy    cumbrous   

wieldy    manageable   

clumsy   

wieldy   

unmanageable    bulky    ponderous    heavy    cumbersome    cumbrous    elephantine    hulking    hunky    unwieldsome   

cumbersome    bulky    ungainly    cumbrous    ponderous    clumsy    slow-moving    misshapen    inconvenient    shapeless