Definition of "unwieldy"

However, the constellation of Argo Navis was so huge and unwieldy that in the 1932 revision, the International Astronomical Union committee chopped it up into a keel (Carina), a poop (Puppis) and sails (Vela).

1985, Patrick Moore, Stargazing: Astronomy without a telescope, Aurum Press, page 18

The railways that would be fused to create the unwieldy Northern Line were the City & South London and the Charing Cross, Euston & Hampstead Railway, known as the 'Hampstead Tube'.

2012, Andrew Martin, Underground Overground: A passenger's history of the Tube, Profile Books, page 175

Recorded music came in unwieldy packages and odd shapes.

2017 February 9, Rob Long, “Why I won’t invest in anything that involves effort”, in The National (UAE)‎