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Useful vs. Useless — What's the Difference?

Difference Between Useful and Useless

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Definitions

Useful

Able to be used for a practical purpose or in several ways
Aspirins are useful for headaches

Useless

Being or having no beneficial use; ineffective
This pen is useless because it's out of ink.

Useful

Having a beneficial use; serviceable
A useful kitchen gadget.

Useless

Having no purpose or reason; pointless; to no avail
It's useless to argue over matters of taste.

Useful

Being of practical use
A useful job.
Useful members of society.

Useless

Incapable of acting or functioning effectively; ineffectual or inept
He panics easily and is useless in an emergency.
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Useful

Having a practical or beneficial use.

Useless

Without use or possibility to be used.
This fork's prongs are bent. It's useless now.

Useful

Full of use, advantage, or profit; producing, or having power to produce, good; serviceable for any end or object; helpful toward advancing any purpose; beneficial; profitable; advantageous; as, vessels and instruments useful in a family; books useful for improvement; useful knowledge; useful arts.
To what can I useful!

Useless

Unhelpful, not useful; pointless (of an action).
I think it's useless to keep this discussion going. It's like talking to a brick wall.
I tried my best to make him quit smoking, but my efforts were useless. He now smokes six packs a day.

Useful

Being of use or service;
The girl felt motherly and useful
A useful job
A useful member of society

Useless

Good-for-nothing; not dependable.
Bill never mows the lawn, takes out the trash or anything. He's useless, but I love him anyways.
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Useful

Of great importance or use or service;
Useful information
Valuable advice

Useless

Unable to do well at a particular task or thing. Useless is mildly insulting.
My brother is useless at most computer games, but he is an awesome PS2 player.
Why do you keep trying? You're obviously useless at it.

Useful

Capable of being turned to use or account;
Useful applications of calculus

Useless

Having, or being of, no use; unserviceable; producing no good end; answering no valuable purpose; not advancing the end proposed; unprofitable; ineffectual; as, a useless garment; useless pity.
Not to sit idle with so great a giftUseless, and thence ridiculous.
Useless are all wordsTill you have writ "performance" with your swords.The other is for waiving.
Waiving all searches into antiquity, in relation to this controversy, as being either needless or fruitless.
Even our blessed Savior's preaching, who spake as never man spake, was ineffectual to many.

Useful

Having a useful function;
Utilitarian steel tables

Useless

Having no beneficial use or incapable of functioning usefully;
A kitchen full of useless gadgets
She is useless in an emergency

Useless

Not useful;
A curiously unhelpful and useless manual

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