1. synthetic substance a compound made artificially by chemical reactions
  2. psychoactive substance a drug that can produce mood changes and distorted perceptions
  3. controlled substance a drug or chemical substance whose possession and use are controlled by law
  4. lubricating substance a substance capable of reducing friction by making surfaces smooth or slippery
  5. under the circumstances because of prevailing conditions
  6. ground substance the body substance in which tissue cells are embedded
  7. in straitened circumstances not having enough money to pay for necessities
  8. nutritiousness the quality of being nourishing and promoting healthy growth
  9. plant substance material derived from plants
  10. gray substance greyish nervous tissue containing cell bodies as well as fibers; forms the cerebral cortex consisting of unmyelinated neurons
  11. grey substance greyish nervous tissue containing cell bodies as well as fibers; forms the cerebral cortex consisting of unmyelinated neurons
  12. nutritiveness the quality of being nourishing and promoting healthy growth
  13. attractive nuisance anything on your premises that might attract children into danger or harm
  14. interrogative sentence a sentence of inquiry that asks for a reply
  15. liquid body substance the liquid parts of the body
  16. nonresistance group refusal to resort to violence even in defense against violence
  17. body substance the substance of the body
  18. living substance the substance of a living cell
  19. humic substance an organic residue of decaying organic matter
  20. resistance any mechanical force that tends to slow or oppose motion