verb

observe

to observe, to notice, to remark, to follow

Scientists observe the behavior of birds.

Scientists observe the behaviour of birds.

I observed that he was nervous.

I observed that he was nervous.

You must observe the rules of the game.

You must observe the rules of the game.

((sth.)) to watch (sth.) carefully Scientists observe the behavior of birds.

((that ...)) to notice or remark (that ...) I observed that he was nervous.

((sth.)) to obey (a rule or law) You must observe the rules of the game.

Synonyms: watch, notice, monitor, follow; Antonyms: ignore, disregard

From Latin 'observare' (to watch, regard), from 'ob-' (in front of, before) + 'servare' (to watch, keep).

To 'observe' is to 'serve' your attention ('ob-' = to) to something.

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