Expectation vs Forecast

When to use each in English, with meaning, register, and examples.

Expectation

Top 2,000 (common)B2noun

Forecast

Top 1,000 (very common)B2noun
Most common: Forecast
 ExpectationForecast
Pronunciation🇬🇧 /["/ˌekspekˈteɪʃn/"]/🇺🇸 /["/ˌekspekˈteɪʃn/"]/🇬🇧 /["/ˈfɔːkɑːst/"]/🇺🇸 /["/ˈfɔːrkæst/"]/
MeaningA belief about what will happen in the future.A prediction about what will happen in the future, especially about the weather.
ExampleThe expectation of success can motivate people to work harder.The weather forecast predicts heavy rain tomorrow.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 1,000 (very common)
CEFR levelB2B2
Part of speechnounnoun
Collocationsbig, great, high, have, hold, establish, grow, rise, change, above expectation, against expectation, contrary to expectation, have every expectation, in line with expectations, big, great, high, have, hold, establish, grow, rise, change, above expectation, against expectation, contrary to expectation, have every expectation, in line with expectations, big, great, high, have, hold, establish, grow, rise, change, above expectation, against expectation, contrary to expectation, have every expectation, in line with expectationsgood, optimistic, gloomy, prepare, produce, give, call for something, predict something, say something, forecast about, forecast for, forecast of
Antonymsdisappointment, doubt, uncertaintyretrospect, ignore, neglect
Common mistakesConfused with 'expectation' vs 'expectations' when referring to multiple beliefs., Using it incorrectly as a verb instead of a noun., Overusing in informal situations where simple terms like 'hope' might be better.Confusing 'forecast' with 'foresee', which means to predict based on intuition., Using 'forecast' as a noun and forgetting the verb form., Mispronouncing it as 'fore-cast' instead of 'fore-kast'.
Usage notesTypically used in both spoken and written English. Use in formal contexts, such as business or academic writing, when discussing predictions or assumptions. Avoid in casual conversation unless referring to personal hopes.Used primarily in discussions about weather or market trends. It is considered neutral and can be used in both formal and informal contexts. Avoid in casual conversations unless discussing specific predictions.

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Expectation

Frequently asked questions: Expectation vs Forecast

What's the difference between Expectation and Forecast?

Expectation: A belief about what will happen in the future. Forecast: A prediction about what will happen in the future, especially about the weather.

Which is more common: Expectation and Forecast?

Forecast is the most common in everyday English.

Are Expectation and Forecast the same CEFR level?

Expectation: B2, Forecast: B2 on the CEFR scale.

What part of speech are Expectation and Forecast?

Expectation: noun, Forecast: noun.

Can you show an example of each?

Expectation: The expectation of success can motivate people to work harder. Forecast: The weather forecast predicts heavy rain tomorrow.

Can I use Expectation and Forecast interchangeably?

Not always. Expectation and Forecast are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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