/ ʌnˈwiːldi; NAmE / adjective
1.
( of an object ) difficult to move or control because of its size, shape or weight
SYN cumbersome
2.
( of a system or group of people ) difficult to control or organize because it is very large or complicated
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WORD ORIGIN
late Middle English (in the sense lacking strength, infirm ): from un- not + wieldy (in the obsolete sense active ).