cross-sell

[ kraws-sel, kros- ]
/ ˈkrɔsˌsɛl, ˈkrɒs- /

verb (used with object), cross-sold, cross-sel·ling.

to sell or try to sell (similar or related products or services) to an existing customer.

verb (used without object), cross-sold, cross-sel·ling.

to engage in cross-selling something.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019