Slacks vs. Trousers

Slacks and Trousers Definitions
Slacks
Not tense or taut; loose
A slack rope.
Slack muscles.
Trousers
An article of clothing that covers the part of the body between the waist and the ankles or knees, and is divided into a separate part for each leg.
The trousers need to be shortened.
Why can women wear trousers when men can’t wear skirts?
Slacks
Lacking in activity; not busy
A slack season for the travel business.
Trousers
A garment worn by men and boys, extending from the waist to the knee or to the ankle, and covering each leg separately.
Slacks
Moving slowly; sluggish
A slack pace.
Trousers
(usually in the plural) a garment extending from the waist to the knee or ankle, covering each leg separately;
He had a sharp crease in his trousers
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Slacks
Lacking in diligence or due care or concern; negligent
A slack worker.
Slacks
Flowing or blowing with little speed
A slack current.
Slack winds.
Slacks
(Linguistics) Pronounced with the muscles of the tongue and jaw relatively relaxed; lax.
Slacks
To make looser or less taut
Slacked the sail.
Slacks
To make slower
Slacked our pace.
Slacks
To be careless or remiss in doing
Slack one's duty.
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Slacks
To slake (lime).
Slacks
To be or become slack.
Slacks
To be inactive or avoid work
Slacked around the house all day.
Slacks
A loose part, as of a rope or sail
Hauled in the slack.
Slacks
A period of little activity; a lull
A slack in business.
Slacks
A cessation of movement in a current of air or water.
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Slacks
An area of still water.
Slacks
Unused capacity
Still some slack in the economy.
Slacks
Slacks Casual pants that are not part of a suit.
Slacks
A mixture of coal fragments, coal dust, and dirt that remains after screening coal.
Slacks
A small dell or hollow.
Slacks
A bog; a morass.
Slacks
In a slack manner
A banner hanging slack.
Slacks
Plural of slack
Slacks
(dated) Semi-formal trousers which are less formal than those that are part of a suit but nowadays are considered suitable casualwear in most offices. (Takes a plural verb even when referring to a single pair; may be referred to as a pair of slacks.)
Slacks
(usually in the plural) pants for casual wear