cumbersome
KUM-ber-sumadjMeaning large and awkward to carry or use; also, slow and complicated
Memory hook LUMBER is CUMBER-some. Pip tries to carry a huge piece of lumber home by himself, but it is so long and heavy that he can barely shuffle: it is cumbersome.
The cumbersome old suitcase had no wheels and kept banging into my knees.
In context The sign-up process was cumbersome: families had to fill out four forms, mail them separately and then call to confirm each one.
Similar awkward, unwieldy, bulky, clumsy
Opposite handy, convenient, compact