1. (

• load ,
• adulterate ,
• stretch ,
• dilute ,
• debase ,

) corrupt, debase, or make impure by adding a foreign or inferior substance; often by replacing valuable ingredients with inferior ones; "adulterate liquor" ;

1. (

• adulterating ,
• adulterant

) making impure or corrupt by adding extraneous materials; "the adulterating effect of extraneous materials" ;