free from living germs or microorganisms; aseptic

sterile surgical instruments.

incapable of producing offspring; not producing offspring.

barren; not producing vegetation

sterile soil.

Botany .

noting a plant in which reproductive structures fail to develop.

bearing no stamens or pistils.

not productive of results, ideas, etc.; fruitless.

noun

asepticism , blandness , colorlessness , drabness , dreariness , dryness , flatness , flavorlessness , insipidity , insipidness , jejuneness , lifelessness , sterility , stodginess , vapidity , vapidness , weariness