contaminate

/kənˈtæmɪneɪt/
verb
  1. To make something dirty, impure, or unsafe by adding a harmful substance.
    • The oil spill contaminated miles of coastline.
    • Be careful not to contaminate the clean samples with your gloves.
    • Bacteria can contaminate food if it is not stored properly.
  2. To affect something with a harmful or unwanted influence.
    • The scandal contaminated the reputation of the entire organization.
    • False information can contaminate public opinion.
    • Negative attitudes can contaminate a team's morale.
What does "contaminate" mean? | whatsthatwordmean | whatsthatwordmean