Look out that window vs Observe

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

Look out that window

Top 2,000 (common)

Observe

Top 1,000 (very common)B2verb
Most common: Observe
 Look out that windowObserve
Pronunciation🇬🇧 //lʊk aʊt ðæt ˈwɪndəʊ//🇺🇸 //lʊk aʊt ðæt ˈwɪndoʊ//🇬🇧 /["/əbˈzɜːv/","/əbˈzɜːvz/","/əbˈzɜːvd/","/əbˈzɜːvɪŋ/"]/🇺🇸 /["/əbˈzɜːrv/","/əbˈzɜːrvz/","/əbˈzɜːrvd/","/əbˈzɜːrvɪŋ/"]/
MeaningCheck or watch what is happening outside.to watch something carefully
ExamplePlease look out that window; I think I saw a rainbow!Please observe the changes in the experiment carefully.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 1,000 (very common)
CEFR level-B2
Part of speechverb
Collocationslook out that window, look out, look outside, look through the window, look at the viewcarefully, closely, precisely, be able to, be possible to, be difficult to, among, for, from, be commonly observed, be frequently observed, be widely observed, carefully, closely, precisely, be able to, be possible to, be difficult to, among, for, from, be commonly observed, be frequently observed, be widely observed, astutely, correctly, keenly, to, correctly, faithfully, scrupulously, fail to, failure to observe something
Antonyms-ignore, neglect, overlook
Common mistakesConfused with 'look in' which suggests looking inside., Using 'look out that window' in a context where it's already understood might seem redundant.Confuse with 'abserve' which is not a word., Use 'observed' incorrectly with non-actions, like 'observed the chair'., Forget the preposition when used with 'something' as in 'observe at the sky' instead of 'observe the sky'.
Usage notesUsed in casual conversation to direct attention towards something visible outside. It's appropriate in both informal and formal contexts but may be less common in formal writing.Use 'observe' when you are watching something closely or carefully. It is a neutral term suitable for both formal and informal contexts, but it may not be suitable for casual conversations where simpler words like 'watch' may work better.

See it in real clips

Look out that window
Observe

Frequently asked questions: Look out that window vs Observe

What's the difference between Look out that window and Observe?

Look out that window: Check or watch what is happening outside. Observe: to watch something carefully

Which is more common: Look out that window and Observe?

Observe is the most common in everyday English.

Can you show an example of each?

Look out that window: Please look out that window; I think I saw a rainbow! Observe: Please observe the changes in the experiment carefully.

Can I use Look out that window and Observe interchangeably?

Not always. Look out that window and Observe 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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