useful

adjective

use·​ful ˈyüs-fəl 

1

: capable of being put to use

especially : serviceable for an end or purpose

useful tools

2

: of a valuable or productive kind

do something useful with your life

usefully

ˈyüs-fə-lē 

adverb

Synonyms of useful

• applicable
• practical
• applied
• applicative

Examples of useful in a Sentence

Does anyone have any useful suggestions?

It can be useful to know CPR.

The Internet is useful for finding information quickly.

She has become one of the team's most useful players.

Why don't you do something useful with your life?

Recent Examples on the Web

This is thanks to Venus and Mars working together in your sensible 6th house, emboldening you to streamline routines and add creative flair to useful habits. —Tarot.com, Baltimore Sun, 7 Jan. 2026

As mentioned, the hydraulic lift system is very useful. —Nashia Baker, Architectural Digest, 7 Jan. 2026

Working with a credit counselor on a debt management plan is another route worth considering, and can be particularly useful if your debt is primarily tied to high-rate credit cards. —Angelica Leicht, CBS News, 7 Jan. 2026

Squeegees are also a useful tool when cleaning glass—they’re great for big windows, shower doors, or mirrors. —Daley Quinn, Southern Living, 7 Jan. 2026

Word History

First Known Use

1595, in the meaning defined at sense 1

Phrases Containing useful

• come in useful
• come in useful/helpful
• make oneself useful
• prove (to be) useful
• useful idiot
• useful life

Kids Definition

useful

adjective

use·​ful ˈyüs-fəl 

1

: capable of being put to use : usable

useful scraps of material

2

: having practical value

a useful invention

usefully

-fə-lē 

adverb

usefulness noun