cumbrous (adj.)

• awkward
• bombastic
• bulky
• burdensome
• clogging
• clumsy
• cramped
• cumbersome
• elephantine
• forced
• formal
• halting
• heavy
• hindering
• hulking
• hulky
• impeding
• incumbent
• labored
• leaden
• lubberly
• lumbering
• lumpish
• lumpy
• massive
• onerous
• oppressive
• pompous
• ponderous
• sesquipedalian
• stiff
• stilted
• superincumbent
• turgid
• unwieldy