Dark Patterns

Dark patterns are techniques that websites and apps use to get their users to take actions they wouldn't otherwise take. There are many simple examples of dark patterns that you have probably come across:

A purchase is actually a subscription, so you will be billed monthly instead of once.
Check the boxes to agree to another form of marketing communication with confusing language (for example, uncheck this box if you don't want to unsubscribe from emails).
Some parts of the screen move at the last minute, forcing you to click in the wrong place.
It closes buttons so small that when you try to close the ad, you click them.

Dark patterns can be considered a hat version of UX design. As with all hat plans, they prioritize short-term profit over long-term growth. They can make some people do things they don't want to do, but these people:

you will be bored
Use your website or app less
I will not recommend you

Communities and reputations are difficult to build, but easy to destroy. Do not use dark patterns.

Literal Meanings of Dark Patterns

Dark:

Meanings of Dark:

Absolute or (more often) relative absence of light.
(about color) Opaque or dark tone, not clear or transparent.
Hidden, secret, dark.
No dark, evil moral or spiritual light.
Promotes oppression or stark despair.
Lack of progress in the sciences or the arts over a of time.
Emphasizing the uncomfortable aspects of the so-called life of a novel, nonfiction presented in narrative form, or parts of both.
Total or (more often) partial absence of light.
Ignore.
Dust.
A dark shade or passage in a painting, print, etc.
Grow or darken, darken.
Stay in the dark, wander, hide or hide.
Darker, darker, darker.

Sentences of Dark

The room was too dark to read.
My sister's hair is darker than mine, her skin has darkened from sunburn.
A dark villain is a dark matter.
The Great Depression was a dark time: the film was a dark psychological thriller.
The ending of this book is quite dark.
The darkness completely surrounds us.
The lawyer did not know why the jury was fired.
It was after dark when I started playing baseball.

Patterns:

Meanings of Patterns:

Example, example.
A design, pattern or decoration specially formed from regularly repeating elements.
A natural or random arrangement of shapes, colors, etc. that is regular or decorative.
Distribution, range, etc. are indicated. firearms fired.
A specific sequence of events, facts, etc., which can be understood, used to predict the future, or can be seen as mathematical, geometric, statistical, etc.
Understandable arrangement in a specific language area.
A sequence of notes, drums, etc. in a later module that can be used one or more times in a song.
How to apply a pattern.
Do or make (something) from or after something that serves as a model to copy in order to imitate.
To take an example.
Fit the pattern.
Serve as an example.