unfruitful

adjectives

not fruitful; not conducive to abundant production
antonym
is similar to
failing to accomplish an intended result
"an abortive revolt"; "a stillborn plot to assassinate the President"
is similar to
producing no fruit
is similar to
without offspring
"in some societies a childless woman is rejected by her tribesmen"
see also
incapable of reproducing
"an infertile couple"