intermix
verb
[ ɪntəˈmɪks ]
• mix together.
• "the ore had to be handled so that it was not inadvertently intermixed with other material"
Origin:
mid 16th century (originally as the past participle intermixt ): from Latin intermixtus, past participle of intermiscere ‘mix together’, from inter- ‘between’ + miscere ‘to mix’.