To make a clumsy or stupid mistake.
To do or treat in a blundering manner; to confuse.
To move blindly or clumsily.
To cause to make a mistake.
A clumsy or embarrassing mistake.
A very bad move, usually caused by some tactical oversight.
The genuinity - as distinguished from the efficacity or the regularity - of a sacrament as a result of some formal dispositions being fulfilled.
The state of being valid, authentic or genuine.
State of having legal force.
A quality of a measurement indicating the degree to which the measure reflects the underlying construct, that is, whether it measures what it purports to measure (see reliability).