Sped vs. Speed — What's the Difference?

Acted swiftly to complete.

Rate of movement.

Moved quickly (past tense of speed).

Methamphetamine (slang).

Hastened, made faster.

Quickness of action or operation.

Driven at high speed.

To cause to move quickly.

Sent rapidly.

A gear ratio in a vehicle.

A past tense and a past participle of speed.

In everyday use and in kinematics, the speed (commonly referred to as v) of an object is the magnitude of the rate of change of its position with time or the magnitude of the change of its position per unit of time; it is thus a scalar quantity. The average speed of an object in an interval of time is the distance travelled by the object divided by the duration of the interval; the instantaneous speed is the limit of the average speed as the duration of the time interval approaches zero.

Simple past tense and past participle of speed

The rate at which someone or something moves or operates or is able to move or operate

A special education student, usually an autistic person.

Each of the possible gear ratios of a bicycle.

The light-gathering power or f-number of a camera lens.

An amphetamine drug, especially methamphetamine.

Success; prosperity

Move quickly

Make prosperous or successful

Take or be under the influence of an amphetamine drug

Distance traveled divided by the time of travel.

The limit of this quotient as the time of travel becomes vanishingly small; the first derivative of distance with respect to time.

The magnitude of a velocity.

Swiftness of action

The act of moving rapidly

The state of being in rapid motion; rapidity

A transmission gear or set of gears in a motor vehicle

A numerical expression of the sensitivity of a photographic film, plate, or paper to light.

The capacity of a lens to accumulate light at an appropriate aperture.

The length of time required or permitted for a camera shutter to open and admit light.

(Slang) A stimulant drug, especially amphetamine or methamphetamine.

(Slang) One that suits or appeals to a person's inclinations, skills, or character

(Archaic) Prosperity; luck.

To go, move, or proceed quickly

To drive at a speed exceeding a legal limit

To pass quickly

To move, work, or happen at a faster rate; accelerate

(Slang) To be under the influence of a stimulant drug.

To prove successful; prosper.

To get along in a specified manner; fare.

To cause to move or proceed quickly; hasten

To increase the speed or rate of; accelerate. Often used with up

To further, promote, or expedite (a legal action, for example).

(Archaic) To help to succeed or prosper; aid.

The state of moving quickly or the capacity for rapid motion.

The rate of motion or action, specifically the magnitude of the velocity; the rate distance is traversed in a given time.

(photography) The sensitivity to light of film, plates or sensor.

(photography) The duration of exposure, the time during which a camera shutter is open (shutter speed).

(photography) The largest size of the lens opening at which a lens can be used.

(photography) The ratio of the focal length to the diameter of a photographic objective.

Amphetamine or any amphetamine-based drug (especially methamphetamine) used as a stimulant, especially illegally.

(archaic) Luck, success, prosperity.

(slang) Personal preference.

A third-order measure of derivative price sensitivity, expressed as the rate of change of gamma with respect to changes in the underlying asset price.

(film) Called by the soundman when the recording equipment has reached running speed and is ready to go.

To succeed; to prosper, be lucky.

To help someone, to give them fortune; to aid or favour.

(intransitive) To go fast.

(intransitive) To exceed the speed limit.

(transitive) To increase the rate at which something occurs.

To be under the influence of stimulant drugs, especially amphetamines.

(obsolete) To be expedient.

(archaic) To hurry to destruction; to put an end to; to ruin.

(archaic) To wish success or good fortune to, in any undertaking, especially in setting out upon a journey.

To cause to make haste; to dispatch with celerity; to drive at full speed; hence, to hasten; to hurry.

To hasten to a conclusion; to expedite.

Prosperity in an undertaking; favorable issue; success.

The act or state of moving swiftly; swiftness; velocity; rapidly; rate of motion; dispatch; as, the speed a horse or a vessel.

One who, or that which, causes or promotes speed or success.

To go; to fare.

To experience in going; to have any condition, good or ill; to fare.

To fare well; to have success; to prosper.

To make haste; to move with celerity.

To be expedient.

To cause to be successful, or to prosper; hence, to aid; to favor.

To cause to make haste; to dispatch with celerity; to drive at full speed; hence, to hasten; to hurry.

To hasten to a conclusion; to expedite.

To hurry to destruction; to put an end to; to ruin; to undo.

To wish success or god fortune to, in any undertaking, especially in setting out upon a journey.

Distance travelled per unit time

A rate (usually rapid) at which something happens;

Changing location rapidly

The ratio of the focal length to the diameter of a (camera) lens system

A central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression

Step on it;

Move faster;

Travel at an excessive or illegal velocity;

Move very fast;

Cause to move faster;

Yes, "speed" can also be used as a verb, meaning to move quickly or proceed rapidly.

In technical contexts, "speed" refers to the rate at which an object or data moves or processes.

While commonly related to physical movement, "sped" can also describe any action completed quickly, such as finishing a task.

"Sped" is often used to describe quick actions or sequences within narratives, emphasizing the pace of events.

Yes, "speed" is often measured in units such as miles per hour (mph) or kilometers per hour (km/h).

Yes, "sped" can be used figuratively, such as in "sped up the process," meaning to make something happen faster.

"Sped" is primarily used as the past tense of "speed," indicating rapid motion completed in the past.

"Speed" is more frequently used than "sped," which is mostly restricted to past tense narrative forms.

Common synonyms for "speed" include velocity, rapidity, and pace.

Yes, "speed" is slang for methamphetamine, a stimulant drug.