Inept

They are a bunch of inept and aggressive cretins..

I'm not usually this inept.

Tom is inept.

This cloth has the special ability to be invisible to the stupid and the inept.

He described the party as corrupt and inept and pledged to lower the price of fuel once his opposition coalition takes over control of government.

My boss is inept.

I am inept at getting along with the women.

As a waiter, he was inept, so they put him in the kitchen.

The bungled phrase, the slipshod paragraph, the inept metaphor, the irrelevant excursion, the disproportionate development, the feeble conclusion, are indeed all failures of meaning, and the more poetically ambitious the verbal structure in which they occur, the deeper and more substantive the failure may be.