fast: meaning and definitions

Acting, moving, or capable of acting or moving quickly; swift.

Accomplished in relatively little time: a fast visit.

Acquired quickly with little effort and sometimes unscrupulously: made a fast buck scalping tickets.

Quick to understand or learn; mentally agile: a class for the faster students.

Indicating a time somewhat ahead of the actual time: The clock is fast.

Allowing rapid movement or action: a fast running track.

Designed for or compatible with a short exposure time: fast film.

Disposed to dissipation; wild: ran with a fast crowd.

Flouting conventional moral standards; sexually promiscuous.

Resistant, as to destruction or fading: fast colors.

Firmly fixed or fastened: a fast grip.

Fixed firmly in place; secure: shutters that are fast against the rain.

Firm in loyalty: fast friends.

Lasting; permanent: fast rules and regulations.

Deep; sound: in a fast sleep.

In a secure manner; tightly: hold fast.

To a sound degree; deeply: fast asleep.

In a rapid manner; quickly.

In quick succession: New ideas followed fast.

Ahead of the correct or expected time: a watch that runs fast.

In a dissipated, immoderate way: living fast.

Archaic Close by; near.

To abstain from food.

To eat very little or abstain from certain foods, especially as a religious discipline.

The act or practice of abstaining from or eating very little food.