Difference between Useless and Wasteful

USELESS vs WASTEFUL: ADJECTIVE

Tending to squander and waste
Laying waste
Marked by or inclined to waste; extravagant.
Full of waste; destructive to property; ruinous.
Expending, or tending to expend, property, or that which is valuable, in a needless or useless manner; lavish; prodigal.
Waste; desolate; unoccupied; untilled.
Inclined to waste or squander money or resources.
Uninhabited, desolate.
Inefficient in use of time and effort and materials

Synonyms Useless, Fruitless, Ineffectual, Unavailing, bootless, profitless, unprofitable, valueless, worthless, futile, abortive. Useless often implies that the cause of failure lies in the situation; as, it is useless to try to mend that clock. Useless is the only one of these words that may thus be applied by anticipation to what might be attempted. That which is fruitless, ineffectual, or unavailing actually fails, and from hindrances external to itself. Unavailing is more likely to be used the fruitless or ineffectual where the failure is through some one's unwillingness; as, unavailing prayers or petitions, ineffectual efforts, fruitless labors. Fruitless is stronger and more final than ineffectual or unavailing.
Having no use; being of no use; unserviceable; usable to no good end; answering no valuable purpose; not advancing the end proposed; unprofitable; ineffectual.

Lavish, Profuse, etc. See extravagant.
Thriftless, unthrifty.
Synonyms and
Uninhabited; desolate; waste.
Extravagant or lavish; profuse to excess; prodigal; squandering: as, a wasteful person.
Producing or involving waste; occasioning serious loss or damage; ruinous.
Destructive; devastating; wasting.

Cast off, Scrap, Waste, Unprofitable, Junked, Unavailing, Unserviceable, Discarded, Otiose, Inutile, Unhelpful, Unuseable, Ineffectual, Unusable, Futile

Wastage, Ineffective, Useless, Pointless, Costly, Unnecessary, Pound foolish, Prodigal, Uneconomic, Uneconomical, Destructive, Spendthrift, Extravagant, Profligate, Inefficient

Cast off, Scrap, Waste, Unprofitable, Junked, Unavailing, Unserviceable, Discarded, Otiose, Inutile, Unhelpful, Unuseable, Ineffectual, Unusable, Futile

Wastage, Ineffective, Useless, Pointless, Costly, Unnecessary, Pound foolish, Prodigal, Uneconomic, Uneconomical, Destructive, Spendthrift, Extravagant, Profligate, Inefficient

The principal, teachers and IT staff are useless.
It does not make you a useless idiot.
Otherwise, they risk being misunderstood and therefore useless.
TRIED CALLING MTNL CUSTOMER CARE BUT ASUSUAL USELESS.
How The Meta is Shifting; Most Useless Commander?
Program sandbags are useless without having the bodyweight!
Stop wasting your time with those useless methods.
Cut all the useless clubs, the unnecessary tables, the investments that are fun to be in but useless to the bottom line.
While the temptations to go in useless or worse than useless direction, certainly exists, there are amazing things on the internet.
If Christ was not raised, then all our preaching is useless, and your trust in God is useless.

United States under present wasteful legislation and administration.
In what sense is a person does wasteful?
This is wasteful and exacerbates the performance issues.
CAPS were however wasteful in the second half.
Promoting the reduction of pollution and wasteful consumption.
Inhumane, Ineffective, and Wasteful, Southern Poverty Law Center.
Certain orthodox economists have criticized mining as wasteful.
Such a partisan strategy is wasteful and polarizing.
Politics seems very wasteful of time and money.
FRUITLESS AND WASTEFUL EXPENDITUREThere was no fruitless or wasteful expenditure incurred during the period under review.