useful
Translation
useful, helpful, practical
Examples
This is a very useful tool.
This is a very useful tool.
Your advice was very useful.
Your advice was very useful.
This app is useful for learning new words.
This app is useful for learning new words.
Grammar Patterns
useful + noun describing a helpful item This is a very useful tool.
useful ((for sth./-ing)) helpful for a purpose This app is useful for learning new words.
Similar Words
Synonyms: helpful, practical, beneficial; Antonyms: useless, unhelpful
Etymology
From 'use' + the suffix '-ful', meaning 'full of'. Something that is 'full of use' is useful.
Memory Tips
If something is 'full of use', it is 'useful'. The opposite is 'useless' (lacking use).