A1adjective1K

Useful

UK /["/ˈjuːsfl/"]/US /["/ˈjuːsfl/"]/

Definition

that can help you to do or achieve what you want

In simple words: Something that helps or is helpful.

Examples

This tool is very useful for fixing things around the house.
Having a map is useful when you are exploring a new city.
A good dictionary is useful for learning new vocabulary.
Reading books can be useful for expanding your knowledge.
It is useful to have a plan before starting your project.

Usage notes

Use 'useful' when describing something that has a practical benefit. It is appropriate in most contexts but avoids overly casual situations.

Grammar pattern

useful + to / for + noun

Memory hint

Think of 'use' plus 'full' — it's full of use!

Collocations

be
look
prove
extremely
fairly
very
as
for
in

Synonyms

competent

Antonyms

useless
ineffective
unhelpful

Common mistakes

Saying 'usefull' instead of 'useful'.
Using 'useful' with actions instead of objects.
Confusing 'useful' with 'useless' without negation.