fast

As a verb fast is

.

Fast is a related term of stiff.

As verbs the difference between fast and stiff

is that fast is while stiff is to fail to pay that which one owes (implicitly or explicitly) to another, especially by departing hastily.

As an adjective stiff is

of an object, rigid, hard to bend, inflexible.

As a noun stiff is

an average person, usually male, of no particular distinction, skill, or education, often a working stiff''''' or ''lucky '''stiff .

Fast is a related term of flying.

As verbs the difference between fast and flying

is that fast is while flying is .

As an adjective flying is

that can fly.

As a noun flying is

an act of flight.

Fast is a related term of unconstrained.

As a verb fast

is .

As an adjective unconstrained is

not constrained.

Fast is a related term of fastened.

As verbs the difference between fast and fastened

is that fast is while fastened is (fasten).

Fast is a related term of effective.

As a verb fast

is .

As an adjective effective is

having the power to produce a required effect or effects.

As a noun effective is

(military) a soldier fit for duty.

Profligate is a related term of fast.

As verbs the difference between profligate and fast

is that profligate is (obsolete) to drive away; to overcome while fast is .

As an adjective profligate

is (obsolete) overthrown, ruined.

As a noun profligate

is an abandoned person; one openly and shamelessly vicious; a dissolute person.

Fast is a synonym of lasting.

As verbs the difference between fast and lasting

is that fast is while lasting is .

As an adjective lasting is

persisting for an extended period of time.

As a noun lasting is

continuance; endurance.

As adjectives the difference between fastidious and fast

is that fastidious is excessively particular, demanding, or fussy about details, especially about tidiness and cleanliness while fast is firmly or securely fixed in place; stable.

As an adverb fast is

in a firm or secure manner, securely; in such a way as not to be moved .

As a noun fast is

a train that calls at only some stations it passes between its origin and destination, typically just the principal stations.

As an interjection fast is

short for "stand fast", a warning not to pass between the arrow and the target.

As a verb fast is

to abstain from food, or eat very little, especially for religious or medical reasons.

Fast is a related term of stimulating.

As verbs the difference between fast and stimulating

is that fast is while stimulating is .

As an adjective stimulating is

having a manner that stimulates.