Any value that is not positive.
Not positive; either zero or negative.
Not positive.
An error or blunder.
A fall, trip or substantial misstep.
A clumsy walk.
To cause to stumble or trip.
To trip or fall; to walk clumsily.
To make a mistake or have trouble.
To strike or happen (upon a person or thing) without design; to fall or light by chance; with on, upon, or against.
To mislead; to confound; to cause to err or to fall.