Synonyms of the word

futile

• adj. Incapable of producing results; useless; not successful; not worth attempting.

bootless

• adj. without boots.
• adj. profitless; pointless; unavailing.

fruitless

• adj. Useless; unproductive.
• adj. Bearing no fruit; barren.
• adj. (rare) Without fruit.

ineffectual

• adj. unable or insufficient to produce effect; futile.
• adj. worthless.
• adj. weak, indecisive; lacking forcefulness.

otiose

• adj. Resulting in no effect.
• adj. Reluctant to work or to exert oneself.
• adj. Having no reason for being (raison d’être); having no point, reason, or purpose.

sleeveless

• adj. Of a garment, having no sleeves.
• adj. (obsolete) Wanting a cover, pretext, or palliation; unreasonable; profitless; useless.

unavailing

• adj. useless, fruitless, futile.

unproductive

• adj. Not productive; useless; fruitless.

useless

• adj. Without use or possibility to be used.
• adj. Unhelpful, not useful; pointless (of an action).
• adj. (pejorative, of a person) good-for-nothing; not dependable.
• adj. (colloquial, of a person) unable to do well at a particular task or thing. Useless is mildly insulting.

vain

• adj. Overly proud of oneself, especially concerning appearance; having a high opinion of one's own accomplishments…
• adj. Having no real substance, value, or importance; empty; void; worthless; unsatisfying.
• adj. Effecting no purpose; pointless, futile.
• adj. Showy; ostentatious.