Englishfor English speakers
rigorous
Adjective
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To be rigorous someone needs to be very strict, exact and not change the rules.
To make herself fit, she kept to a rigorous program of exercise.
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Something that is rigorous is very difficult and unpleasant.
He found the walk through the snow was quite rigorous.
distinction
Noun
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A distinction is a difference that you have noticed or decided is important. Often used to separate things.
Before we discuss how you can develop your creative powers, we need to make a distinction between two different but related activities --; THINKING and LEARNING.
There is, in other words, no neat or clear distinction to be drawn between political equality and social and economic equality.
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If something is done with distinction, it is done to a high level and other people recognise that.
We only wanted to take athletes of distinction; no one is going just for the trip.