fair coin
A sequence of independent Bernoulli trials (a Bernoulli process) with probability 1/2 of success on each trial.
Meaning adapted from Wiktionary, available under CC BY-SA 4.0.
“If you flip a fair coin, you have a fifty percent chance of heads.”
“To ensure the game is unbiased, we must use a fair coin for the opening toss.”
“Assuming the experiment relies on a fair coin, the theoretical probability of observing ten consecutive heads remains extremely low.”
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fair crack of the whip
Let's have an equitable attempt, match, or process. Used as an appeal for reasonableness.
- 02
fair enough
An expression used to concede a point, but suggesting that the broader argument is incorrect.
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fair game
Actions permissible by the rules.
- 04
fair sex
Women collectively.
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fair shake
Reasonable, unbiased treatment; a fair deal.
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fair share
A significant amount, often implied to be excessive or inordinate; a great deal of something.
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fair to middling
Only tolerably good; somewhat favorable.
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good coin
Something genuine or trustworthy.
Last updated August 10, 2026