Difference between Useless and Otiose

USELESS vs OTIOSE: ADJECTIVE

Serving no useful purpose; having no excuse for being
Producing no result or effect
Disinclined to work or exertion
Lazy; indolent.
Of no use; pointless or superfluous.
Ineffective; futile. : vain.
Being at leisure or ease; unemployed; indolent; idle.
Resulting in no effect.
Reluctant to work or to exert oneself.
Having no reason for being (raison d’être); having no point, reason, or purpose.

Having no use; being of no use; unserviceable; usable to no good end; answering no valuable purpose; not advancing the end proposed; unprofitable; ineffectual.
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 excuse for being
Serving no useful purpose
Made, done, or performed in a leisurely, half-hearted way; perfunctory, negligent; careless; hence, ineffective; vain; futile; to no purpose.
Being at rest or ease; not at work; unemployed; inactive; idle.

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

Nugatory, Faineant, Work shy, Idle, Wasted, Lazy, Indolent, Slothful, Worthless, Futile, Unavailing, Ineffectual, Useless, Pointless, Superfluous

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

Nugatory, Work shy, Faineant, Idle, Wasted, Lazy, Indolent, Slothful, Worthless, Futile, Unavailing, Ineffectual, Useless, Pointless, Superfluous

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.

DTAA otiose, which cannot be the intention of the negotiating parties and which is also contrary to the generally understood principles of International taxation.
Consequently, a weak enforcement mechanism defeats the very purpose of mediation and renders the entire process unproductive and otiose.
Furthermore, the very idea of an absolute world is untenable, or at the very least empty and otiose.
When Gregory Wenner killed himself, half sick And half malingering, and otiose.
According to him express statutorily conferred power to grant reliefs cannot be negated and rendered otiose.
Without the church to support it, the New Covenant would become otiose.
Ailith Roberts and John Dummett, known collectively as "otiose", are rising stars on the British art scene.
One might wonder whether this makes the previous section on mental action and attributability otiose.
Collier believed them to be, then the Short View is otiose.
US law makes such a distinction in any event otiose.