# probability

[prob-uh-bil-i-tee]

### noun, plural prob·a·bil·i·ties.

the quality or fact of being probable.

a strong likelihood or chance of something: The probability of the book's success makes us optimistic.

a probable event, circumstance, etc.: Our going to China is a probability.

Statistics.

- the relative possibility that an event will occur, as expressed by the ratio of the number of actual occurrences to the total number of possible occurrences.
- the relative frequency with which an event occurs or is likely to occur.

## Origin of probability

Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

## Related Words for in all probability

presumably, doubtless, supposedly, surely, probably, apparently, seemingly, perhaps, possibly, presumptively, plausibly, doubtlessly, assumably, credible, indubitably, theoretically, unquestionably, hypothetically, maybe, reasonably## probability

### noun plural -ties

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

## probability

Online Etymology Dictionary, © 2010 Douglas Harper

## probability

[prŏb′ə-bĭl′ĭ-tē]

The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

## probability

The New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

## in all probability

## probability

The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.