(a.) Not producing fruit or offspring; unproductive; infertile; barren; sterile; as, an unfruitful tree or animal; unfruitful soil; an unfruitful life or effort.

acarpous arid barren celibate childless desert desolate drained dried-up dry effete exhausted fallow fruitless gaunt gelded impotent ineffectual infecund infertile issueless jejune leached menopausal nonfertile nonproducing nonproductive nonprolific sine prole sterile sucked dry teemless uncultivated unfertile unplowed unproductive unprolific unsown untilled virgin waste wasted without issue