unsound

In a brief filed to the court, he called the firm's arguments "meritless and unsound."

It said another team asked to review the recommendations of Amazon's internal safety study had found that the methodology was "unsound".

The surface pleasures of “Y2K” are outlandishly fun, but plot-wise, the film is structurally unsound.

More than half a dozen experts who spoke with The Times said Kennedy’s suggestions that the science around vaccines is unsound would undercut public health.

The Tax Foundation, a conservative-leaning think tank, called Trump’s pitch “unsound and fiscally irresponsible,” saying it would increase the budget deficit by $1.6 trillion over 10 years.