/ ˈkʌmbəsəm; NAmE -bərs-/ adjective
1.
large and heavy; difficult to carry
SYN bulky :
cumbersome machinery
2.
slow and complicated :
cumbersome legal procedures
3.
( of words or phrases ) long or complicated :
The organization changed its cumbersome title to something easier to remember.
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WORD ORIGIN
late Middle English (in the sense difficult to get through ): from cumber obstruct + -some .