1、Excellent

World-class：world-class museum

State of the art：The system was state of the art (a state-of-theart system)

Compelling：Her latest book makes compelling reading

Fascinating：The exhibition tells the fascinating story of the steam age.

Modern：Stress is a major problem of modern life. A modern computer system.

Up-to-date：Up-to-date equipment. We are keeping up to date with the latest developments.

Fresh：I think it's time we tried a fresh approach.

Outdated：It is an outdated and inefficient system.

Old-fashioned：old-fashioned clothes/styles/methods/equipment

5、Easy, simple

Straightforward：a straightforward process

Uncomplicated：Why can't I have an uncomplicated life?

Challenging:challenging work/questions/problems

Tough：It was a tough decision to make.

Numerous：Numerous studies have shown this to be true.

Harmful：The harmful effects of alcohol are well established.

Detrimental：The policy will be detrimental to the peace process.

Inappropriate：The existing practice is totally inappropriate to the needs of modern society.

Substantial：There are substantial differences between the two groups.

Sizable：Income from tourism accounts for a sizeable proportion of the area’s total income.

Rapid：rapid change/expansion/growth; a rapid rise/decline in sales

Suitable：This programme is not suitable for children.

Acceptable：We want a political solution that is acceptable to all parties.

Necessary：Changes can easily be made where necessary.

Vital：The police play a vital role in our society.

Crucial：It is crucial that we get this right.

Essential：Money is not essential to happiness.

Incorrect：incorrect information/spelling

Inaccurate：These figures are somewhat inaccurate.

Equivalent：The new regulation was seen as equivalent to censorship.

Extensive：Extensive research has been done into this disease.

Lengthy：lengthy delays; the lengthy process of obtaining a visa

Subsequent：Subsequent events confirmed our doubts.

Remarkable：What is even more remarkable about the whole story is…

Noteworthy：The bridge is noteworthy for its sheer size.

Hazardous:environmentally hazardous substances.

Uncertain:an uncertain future

Perilous:a perilous adventure/journey/situation

Renowned：a renowned author

Distinguished：a distinguished career in medicine

Well-known：It is a well-known fact that caffeine is a stimulant.