Another word for cumbersome

The large lockers were cumbersome and heavy.

This is going to be a lot more cumbersome than my usual costume.

While it was feasible, Quinn's equipment was cumbersome and there were the ever present problem of absolute quiet, not to mention the security issue.

But this advantage is only procured by the sacrifice of some accuracy; for notwithstanding the cumbersome apparatus employed, the conditions of the problem are not always exactly satisfied, nor is it possible that they can be always satisfied by any similar method of proceeding.

Taking a detached view of Turkish civilization, even of the faith of Islam itself, for the two are inseparable - the Committee saw much wanting, much existing that was cumbersome and useless, much that provided a fatal handicap to the progress of the Ottoman State.