on a sixpence

on a sixpence

In an instant; very quickly, rapidly, or abruptly. Primarily heard in UK. He's usually a nice guy, but his temper can turn on a sixpence sometimes. The steering is so good on this car that you can turn on a sixpence, even at high speeds.
See also: on, sixpence

on a sixpence

(of a stop or turn) within a small area or short distance. British informal
The old sixpenny coin was one of the smallest in circulation in Britain prior to decimalization in 1971 .
See also: on, sixpence