► usefulhelping you to do or get what you want: She gave me some useful advice. Such techniques might prove useful in detecting breast cancer.
► of use formal useful. Used especially in writing: The book will be of use to all nurses.
► helpful useful and helping you to do something: She made some helpful suggestions, and I was able to really improve my essay.
► valuable very useful and helping you to do something. Used especially about advice, information, or help: The website contains lots of valuable information.
► invaluable extremely useful and helping you to do something: The drug could be invaluable for treating cancer patients.
► handy useful and easy to use: It’s a handy little camera, and not too expensive.
► worthwhile useful and worth doing: The training was certainly worthwhile – we learned how to use a new computer program.
► beneficial having a good effect and therefore useful: Biking is beneficial to your health.
► productive producing or achieving a lot and therefore useful: I had a very productive morning – I got most of my work done.