cumbersome

adjective

1. 1

   Burdensome or hindering, as a weight or drag; vexatious

2. 2

   Not easily managed or handled; awkward; clumsy.

   “Cumbersome machines can endanger operators and slow down production.”

3. 3

   Hard, difficult, demanding to handle or get around with.

   “A slaves' work was as cumbersome as toiling on the fields, or in the mines.”

4. 4

   Inert, lumbering, slow in movement