FRUITLESSLY
unproductively, fruitlessly, unprofitably
(adverb) in an unproductive manner
Source: WordNet® 3.1
Etymology
Adverb
fruitlessly (comparative more fruitlessly, superlative most fruitlessly)
In a fruitless manner
Source: Wiktionary
FRUITLESS
Fruit"less, a.
1. Lacking, or not bearing, fruit; barren; destitute of offspring;
as, a fruitless tree or shrub; a fruitless marriage. Shak.
2. Productive of no advantage or good effect; vain; idle; useless;
unprofitable; as, a fruitless attempt; a fruitless controversy.
They in mutual accusation spent The fruitless hours. Milton.
Syn.
– Useless; barren; unprofitable; abortive; ineffectual; vain; idle;
profitless. See Useless.
– Fruit"less*ly, adv.
– Fruit"lness*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition