inefficient

The two discoveries were accidental, inefficient.

Without studies—inefficient studies—we could not say for sure.

“Urban sprawl creates inefficient cities which unnecessarily destroys millions of acres of land,” he continued.

Kawaoka’s research shows “inefficient replication” of the virus in human corneal cells.

Trump was stymied in reaching many of these goals largely because he was inefficient about pursuing them until the second half of his term.