incompetent

“The master of this house pays you to keep a close eye on his wards, you incompetent! Do you have any idea how much is at stake should they wander off?”

“Awful, clumsy, incompetent workmen! I shall have them all fired,” she fumed.

They've accused Senate Democratic leader Chuck Schumer – who didn't vote for the funding bill – of being secretly complicit in the reopening plan or simply incompetent.

When professors are concentrated at one extreme, a department isn’t only unbalanced—it’s incompetent.

“We look like fools to our friends,” wrote a New York Times columnist, “rascals to our enemies and incompetents to the rest.”