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Definition useful in British English

useful adjective

adjective
/ˈjuːsf(ə)l/

Although the adjective full ends with a double ‘l’, adjectives like useful have only one ‘l’:

✗ Find a more usefull spare time activity than driving around in a car.

✓ Find a more useful spare time activity than driving around in a car.

Other adjectives ending in -ful are also written with only one ‘l’, for example:

careful, faithful, harmful, helpful, meaningful, painful, powerful, skilful, successful

Note however that adverbs formed from these adjectives are written with double ‘l’, for example:

carefully, faithfully, helpfully, usefully etc

1

helpful for doing or achieving something

Example

Here's some useful information about travel in Canada.

Example

a useful tool/technique/gadget

Example

Her book is a useful contribution to our understanding of how Mozart worked.

Example

I was useful to them because I could speak French.

Example

That basket would be useful for picnics.

Example

Old pictures are useful for seeing how people used to dress.

Example

Thanks. It's useful to know that.

Example

Would it be useful for you to ask us some questions?

Example

Keep a record of everything that might prove useful.

Synonyms and related words
2

good, or skilful

Example

a useful player

Synonyms and related words
3

used for saying that something is completely useless

Example

He's about as useful as a chocolate teapot.

Example

All this packaging is about as useful as a screen door in a submarine.

Definition useful in British English