upsellup‧sell /ˈʌpsel/ verb [intransitive, transitive] 
to persuade a customer to buy more or to buy something more expensive
to persuade a customer to buy more or to buy something more expensive- compassion fatigue
- compass rose
- compatibility
- compatible
- compatriot
- compel
- compelling
- compellingly
- compendium
- compensate
- compensation
- compensatory
- compere
- compete
- competence
- competent
- competently
- competing
- competition
- Competition Commission
- competitive
- competitively
- competitiveness
- competitor
- compilation