Slack vs. Stack

Not tense or taut; loose

An orderly pile, especially one arranged in layers

Lacking in activity; not busy

A large, usually conical pile of straw or fodder arranged for outdoor storage.

Moving slowly; sluggish

(Computers) A section of memory and its associated registers used for temporary storage of information in which the item most recently stored is the first to be retrieved.

Lacking in diligence or due care or concern; negligent

A group of three rifles supporting each other, butt downward and forming a cone.

Flowing or blowing with little speed

A chimney or flue.

(Linguistics) Pronounced with the muscles of the tongue and jaw relatively relaxed; lax.

A group of chimneys arranged together.

To make looser or less taut

A vertical exhaust pipe, as on a ship or locomotive.

To make slower

An extensive arrangement of bookshelves.

To be careless or remiss in doing

The area of a library in which most of the books are shelved.

To slake (lime).

A stackup.

To be or become slack.

An English measure of coal or cut wood, equal to 108 cubic feet (3.06 cubic meters).

To be inactive or avoid work

(Informal) A large quantity

A loose part, as of a rope or sail

To arrange in a stack; pile.

A period of little activity; a lull

To load or cover with stacks or piles

A cessation of movement in a current of air or water.

(Games) To prearrange the order of (a deck of cards) so as to increase the chance of winning.

An area of still water.

To prearrange or fix unfairly so as to favor a particular outcome

Unused capacity

To direct (aircraft) to circle at different altitudes while waiting to land.

Slacks Casual pants that are not part of a suit.

To form a stack

A mixture of coal fragments, coal dust, and dirt that remains after screening coal.

(heading) A pile.

A small dell or hollow.

A large pile of hay, grain, straw, or the like, larger at the bottom than the top, sometimes covered with thatch.

A bog; a morass.

A pile of similar objects, each directly on top of the last.

In a slack manner

(UK) A pile of poles or wood, indefinite in quantity.

(uncountable) The part of anything that hangs loose, having no strain upon it.

A pile of wood containing 108 cubic feet. (~3 m³)

(countable) A tidal marsh or shallow that periodically fills and drains.

An extensive collection

Unconditional listening attention given by client to patient.

A smokestack.

(rail) A temporary speed restriction where track maintenance or engineering work is being carried out at a particular place.

(heading) In computing.

(countable) A valley, or small, shallow dell.

(programming) A linear data structure in which items inserted are removed in reverse order (the last item inserted is the first one to be removed).

(mining) Small coal; coal dust.

A stack data structure stored in main memory that is manipulated during machine language procedure call related instructions.

(normally said of a rope) Lax; not tense; not firmly extended.

An implementation of a protocol suite (set of protocols forming a layered architecture).

Weak; not holding fast.

A combination of interdependent, yet individually replaceable, software components or technologies used together on a system.

Moderate in some capacity.

(math) A generalization of schemes in algebraic geometry and of sheaves.

Moderately warm.

(geology) A coastal landform, consisting of a large vertical column of rock in the sea.

Moderate in speed.

(library) Compactly spaced bookshelves used to house large collections of books.

Lacking diligence or care; not earnest or eager.

(figuratively) A large amount of an object.

Not active or busy, successful, or violent.

(military) A pile of rifles or muskets in a cone shape.

Excess; surplus to requirements.

(poker) The amount of money a player has on the table.

Vulgar; sexually explicit, especially in dancehall music.

(heading) In architecture.

(linguistics) Lax.

A number of flues embodied in one structure, rising above the roof.

Slackly.

A vertical drainpipe.

To slacken.

A fall or crash, a prang.

(obsolete) To mitigate; to reduce the strength of.

(bodybuilding) A blend of various dietary supplements or anabolic steroids with supposed synergistic benefits.

To lose cohesion or solidity by a chemical combination with water; to slake.

(aviation) A holding pattern, with aircraft circling one above the other as they wait to land.

Small coal; also, coal dust; culm.

(video games) The quantity of a given item which fills up an inventory slot or bag.

A valley, or small, shallow dell.

(transitive) To arrange in a stack, or to add to an existing stack.

The part of anything that hangs loose, having no strain upon it; as, the slack of a rope or of a sail.

To arrange the cards in a deck in a particular manner.

Lax; not tense; not hard drawn; not firmly extended; as, a slack rope.

To take all the money another player currently has on the table.

Weak; not holding fast; as, a slack hand.

(transitive) To deliberately distort the composition of (an assembly, committee, etc.).

Remiss; backward; not using due diligence or care; not earnest or eager; as, slack in duty or service.

To crash; to fall.

Not violent, rapid, or pressing; slow; moderate; easy; as, business is slack.

(gaming) To operate cumulatively.

Slackly; as, slack dried hops.

To place (aircraft) into a holding pattern.

To become slack; to be made less tense, firm, or rigid; to decrease in tension; as, a wet cord slackens in dry weather.

To collect precious metal in the form of various small objects such as coins and bars.

To be remiss or backward; to be negligent.

(printing) To have excessive ink transfer.

To lose cohesion or solidity by a chemical combination with water; to slake; as, lime slacks.

A large and to some degree orderly pile of hay, grain, straw, or the like, usually of a nearly conical form, but sometimes rectangular or oblong, contracted at the top to a point or ridge, and sometimes covered with thatch.

To abate; to become less violent.

An orderly pile of any type of object, indefinite in quantity; - used especially of piles of wood. A stack is usually more orderly than a pile

To lose rapidity; to become more slow; as, a current of water slackens.

A pile of wood containing 108 cubic feet.

To languish; to fail; to flag.

A large quantity; as, a stack of cash.

To end; to cease; to desist; to slake.

A number of flues embodied in one structure, rising above the roof.

To render slack; to make less tense or firm; as, to slack a rope; to slacken a bandage.

A section of memory in a computer used for temporary storage of data, in which the last datum stored is the first retrieved.

To neglect; to be remiss in.

The section of a library containing shelves which hold books less frequently requested.

To deprive of cohesion by combining chemically with water; to slake; as, to slack lime.

To lay in a conical or other pile; to make into a large pile; as, to stack hay, cornstalks, or grain; to stack or place wood.

To cause to become less eager; to repress; to make slow or less rapid; to retard; as, to slacken pursuit; to slacken industry.

To place in a vertical arrangement so that each item in a pile is resting on top of another item in the pile, except for the bottom item; as, to stack the papers neatly on the desk; to stack the bricks.

To cause to become less intense; to mitigate; to abate; to ease.

To select or arrange dishonestly so as to achieve an unfair advantage; as, to stack a deck of cards; to stack a jury with persons prejudiced against the defendant.

Dust consisting of a mixture of small coal fragments and coal dust and dirt that sifts out when coal is passed over a sieve

An orderly pile

A noticeable deterioration in performance or quality;

(often followed by `of') a large number or amount or extent;

A stretch of water without current or movement;

A list in which the next item to be removed is the item most recently stored (LIFO)

The condition of being loose (not taut);

A large tall chimney through which combustion gases and smoke can be evacuated

A cord or rope or cable that is hanging loosely;

A storage device that handles data so that the next item to be retrieved is the item most recently stored (LIFO)

Avoid responsibilities and work, be idle

Load or cover with stacks;

Be inattentive to, or neglect;

Arrange in stacks;

Release tension on;

Arrange the order of so as to increase one's winning chances;

Make less active or fast;

Become slow or slower;

Make less active or intense

Become less in amount or intensity;

Cause to heat and crumble by treatment with water;

Not tense or taut;

Lacking in strength or firmness or resilience;

Flowing with little speed as e.g. at the turning of the tide;

Lacking in rigor or strictness;