Lummox

Despite being a bit of a lummox, Tom was a good guy.

Don't be such a lummox!

The graceless lummox stumbled into the room, knocking over a lamp on his way in.

You've broken the plates, you great lummox!

As a rule, a knight is a lummux, and sometimes even a labrick, and hence open to pretty poor arguments when they come glibly from a superstition-monger, but even he could see the practical side of a thing once in a while; […]

I love you, Gal. You're lovable. Big lovable bloke. Loveable lump. Loveable lummox. Gal Dove, party boy. Big oaf.