expectation

An expectation is a belief about what might happen in the future, like your expectation to stay close with your best friends your whole life.

The word expectation comes from the Latin word expectationem, meaning "an awaiting." If you have great expectations, you think something good will come your way, but if keep your expectations low, you won't risk being disappointed. Expectation can also describe something that is supposed to happen, like a teacher whose expectation is that everyone comes to class prepared.

Primary Meanings of expectation

1.
n
belief about (or mental picture of) the future
2.
n
the sum of the values of a random variable divided by the number of values
Full Definitions of expectation
1

n belief about (or mental picture of) the future

Synonyms:
outlook, prospect
Types:
show 7 types...
hide 7 types...
hope, promise
grounds for feeling hopeful about the future
foretaste
an early limited awareness of something yet to occur
possibility
a future prospect or potential
anticipation, expectancy
something expected (as on the basis of a norm)
apprehension, misgiving
painful expectation
rainbow
an illusory hope
life expectancy
an expected time to live as calculated on the basis of statistical probabilities
Type of:
belief
any cognitive content held as true

n the feeling that something is about to happen

Types:
show 4 types...
hide 4 types...
anticipation, expectancy
an expectation
suspense
excited anticipation of an approaching climax
fever
intense nervous anticipation
hope
a specific instance of feeling hopeful
Type of:
feeling
the experiencing of affective and emotional states

n anticipating with confidence of fulfillment

Synonyms:
anticipation
Type of:
hopefulness
full of hope
2

n the sum of the values of a random variable divided by the number of values

Synonyms:
arithmetic mean, expected value, first moment
Type of:
mean, mean value
an average of n numbers computed by adding some function of the numbers and dividing by some function of n

Sign up, it's free!

Whether you're a student, an educator, or a lifelong learner, Vocabulary.com can put you on the path to systematic vocabulary improvement.