sterile

adjective

• 1not able to produce children or young:the disease had made him sterile
• (of a plant) not able to produce fruit or seeds: the peppermints are vigorous sterile hybrids
• (of land or soil) too poor in quality to produce crops: vast tracts of sterile desert land
• lacking in imagination, creativity, or excitement; uninspiring or unproductive:he found the fraternity’s teachings sterile

• 2free from bacteria or other living microorganisms; totally clean:a sterile needle and syringes