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Synonyms

observe

American  
[uhb-zurv] / əbˈzɜrv /

verb (used with object)

observed, observing
  1. to see, watch, perceive, or notice.

    He observed the passersby in the street.

    Antonyms:
    ignore
  2. to regard with attention, especially so as to see or learn something.

    I want you to observe her reaction to the judge's question.

    Synonyms:
    note
    Antonyms:
    ignore
  3. to watch, view, or note for a scientific, official, or other special purpose.

    to observe an eclipse.

    Antonyms:
    ignore
  4. to state by way of comment; remark.

    He observed frequently that clerks were not as courteous as they used to be.

    Synonyms:
    say, mention
  5. to keep or maintain in one's action, conduct, etc..

    You must observe quiet.

  6. to obey, comply with, or conform to.

    to observe laws.

    Synonyms:
    fulfill, follow
    Antonyms:
    ignore
  7. to show regard for by some appropriate procedure, ceremony, etc..

    to observe Palm Sunday.

    Synonyms:
    keep, celebrate
    Antonyms:
    ignore
  8. to perform duly or solemnize (ceremonies, rites, etc.).

    Antonyms:
    ignore
  9. to note or inspect closely for an omen or sign of future events.


verb (used without object)

observed, observing
  1. to notice.

  2. to act as an observer.

  3. to remark or comment (usually followed by on orupon ).

observe British  
/ əbˈzɜːv /

verb

  1. (tr; may take a clause as object) to see; perceive; notice

    we have observed that you steal

  2. (when tr, may take a clause as object) to watch (something) carefully; pay attention to (something)

  3. to make observations of (something), esp scientific ones

  4. to make a comment or remark

    the speaker observed that times had changed

  5. (tr) to abide by, keep, or follow (a custom, tradition, law, holiday, etc)

"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

Related Words

Observe, witness imply paying strict attention to what one sees or perceives. Both are “continuative” in action. To observe is to mark or be attentive to something seen, heard, etc.; to consider carefully; to watch steadily: to observe the behavior of birds, a person's pronunciation. To witness, formerly to be present when something was happening, has added the idea of having observed with sufficient care to be able to give an account as evidence: to witness an accident.

Other Word Forms

Etymology

Origin of observe

First recorded in 1350–1400; Middle English observen, from Middle French observer, from Latin observāre “to watch, regard, attend to,” equivalent to ob- ob- + servāre “to keep, save, pay heed to”

Explanation

Observe is often used to mean “remark” or “comment.” When trying to start up a conversation with an attractive stranger, you might observe that it’s raining outside (but hopefully you’ll come up with something more interesting to say). Observe has several secondary meanings, one of which is “notice” or “discover.” If you start a conversation with that attractive stranger, you’ll probably observe whether he or she seems interested in talking to you. Observe can also mean “watch carefully with great interest”; you might be tempted to observe the attractive stranger in this manner, but that might make him or her uncomfortable. Try to stay cool.

Keep Reading on Vocabulary.com

Vocabulary lists containing observe

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Pikovski and his collaborators first proposed the idea more than a decade ago, but the effect was too subtle to observe experimentally at the time.

From Science Daily • May 18, 2026

Similarly, those in the media or the foreign policy establishment who profess dismay that China’s rulers now view the U.S. as a global equal are also failing to observe the obvious.

From Salon • May 17, 2026

The English Football League has accused Saints of "observing, or attempting to observe, another club's training session within 72 hours of a scheduled match" and not acting "with the utmost good faith" to another club.

From BBC • May 12, 2026

And it is fascinating to observe that Handel’s oratorio and Melville’s novel, two works of immense popularity that are among the greatest works of their genres, both function on the outskirts of narrative.

From Los Angeles Times • May 11, 2026

After my cage was taken care of, I felt well enough to observe Mrs. Brisbane more carefully.

From "The World According to Humphrey" by Betty G. Birney

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