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English definition of “observe”

observe

verb [T] (NOTICE)    /əbˈzɜːv/ US  /-ˈzɝːv/ formal
C1 to notice or see : Jack observed a look of anxiety on his brother's face . [+ question word] The guards failed to observe who delivered the package . [+ that] In all these films one observes that directors are taking a new interest in Native American culture . [+ infinitive without to] A teacher observed her climb over the gate .Using the eyesEyesight, glasses and lensesThe eye and surrounding areaPerceptive observable     /-ˈzɜː.və.bl̩/ US  /-ˈzɝː.və.bl̩/ adjective There's no observable connection between the two events .VisibleApparent and obvious observably     /-ˈzɜː.və.bli/ US  /-ˈzɝːː.və.bli/ adverb VisibleApparent and obvious
(Definition of observe verb (NOTICE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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