adjective

useful

/YOOS-ful/ use·ful 2 syllables

Able to be used practically; giving real benefit.

Word facts

Part of speech adjective
Syllables 2
Letters 6
Starts with U

Definition

Useful describes something that is able to be used for a practical purpose or that gives benefit in some way. A useful tool, skill, or piece of advice helps achieve something.

Usage: Useful is broader than practical — something useful gives benefit even if it is not purely functional. Helpful implies assistance to someone. Functional means designed to serve a purpose.

Example sentences

  1. 1

    A good dictionary is one of the most useful tools for any writer.

  2. 2

    She gave him some very useful advice before the interview.

  3. 3

    Learning to type quickly is a useful skill in any office job.

Word family

noun usefulness
adverb usefully
adjective useless
verb reuse
Word origin

From use (Latin usus, 'use, employment') + -ful. Something useful is full of use — able to be applied to good purpose.

Memory tip

Useful = use + -ful. A useful thing is full of use — you can use it well and often.

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FAQ

Questions people ask

What is the opposite of useful?

Useless. Example: Without training, the equipment is essentially useless.

What is the noun form of useful?

Usefulness. Example: The usefulness of this tool depends on how you apply it.