jackknife (noun) swan dive: arched dive like swan's
Sinonime: antiseptic, arid, aseptic, bare, barren, bleak, dead*, decontaminated, desert, desolate, disinfected, dry, effete, empty, fallow, fruitless, futile, gaunt, germ-free, hygienic, impotent, infecund, infertile, pasteurized, sanitary, septic, sterilized, unfruitful, uninfected, unprofitable, unprolific, vain, waste, without issue