to no avail (adjective) fruitless: bringing no advantage, product
Sinonime: abortive,
barren,
empty,
futile, gainless,
idle, in vain,
ineffective,
ineffectual, infertile,
pointless, profitless, spinning one's wheels,
sterile, to no avail, to no effect,
unavailable, unavailing, unfruitful, unproductive, unprofitable, unprolific,
unsuccessful,
useless,
vain, wild goose chase
Antonime: copious,
fruitful,
plentiful,
potent,
productive,
profitable,
successful,
useful