TO NOTICE - [verb] to see and pay attention to
Examples of use
She had a new blouse, but her husband didn't even notice it.
I noticed that they were looking rather nervous and asked them what had happened.
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English speaking practise
Remember that if you don't use that word in English conversations or writing you'll forget it in a short time. So the best thing you can do to learn this word is just trying to use it in speaking or writing. Remember also that practise is the key to fluent english speaking.
You can always find a partner, who would also like to improve his/her