Synonyms of the word 
UNIMPREGNATED → INFERTILE - STERILE - UNFERTILE - UNFERTILISED - UNFERTILIZED
unimpregnated
- adj. Not impregnated.
infertile
- adj. not fertile.
sterile
- adj. (not comparable) Unable to reproduce (or procreate).
- adj. Unprofitable.
- adj. Germless; free from all living or viable microorganisms.
unfertile
- adj. Not fertile.
unfertilised
- adj. Alternative spelling of unfertilized.
unfertilized
- adj. Not fertilized.
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