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Definition of expectancy

expectancy

/ɪkˈspɛktənsi/
ex · pec · tan · cy

Adverb:expectantly
•
Plural:expectancies
•
Adjective:expectant
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expectancy Lexical Profile

expectancy Game Scores & Validity

• noun

1

The statistically probable amount or duration of something, especially the average period a person or organism may expect to live.

Example

"Advances in public health and nutrition have significantly increased average life expectancy over the past century."


2

The state of thinking or hoping that something, especially something pleasant or exciting, will happen; anticipation.

Example

"There was an air of quiet expectancy in the concert hall just before the orchestra began to play."


3

A contingent hope or bare possibility of acquiring an estate or interest in property in the future, such as that of a prospective heir before the ancestor's death (in law).

Example

"Under traditional property law, a mere expectancy cannot be transferred by deed because no actual legal right has vested yet."

Synonyms
View all synonyms for expectancy

Word Nuance & Usage

While 'expectation' usually refers to a specific belief or requirement about what will happen, 'expectancy' emphasizes the emotional state of eager anticipation or is used in statistical contexts such as 'life expectancy'.

• Rhymes for expectancy

Word Origin & Etymology

Formed in the early 17th century from the adjective 'expectant' and the suffix '-cy', ultimately tracing back to the Latin verb 'expectare' ('to await, look out for'), from 'ex-' ('out') and 'spectare' ('to look').

Cite this Entry


Wordmom. (2026). Definition of Expectancy. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/expectancy
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