BOGOFBOGOF, bog‧of /ˈbɒɡɒf $ ˈbɑːɡɒːf, ˈbɒːɡ-/ noun [countable, uncountable] 
(buy one get one free) an offer from a shop to sell you two things of the same type for the price of one: 
Take advantage of special offers and BOGOFs in supermarkets.
(buy one get one free) an offer from a shop to sell you two things of the same type for the price of one: Take advantage of special offers and BOGOFs in supermarkets.- interchangeable
- interchangeably
- intercity
- intercollegiate
- intercom
- interconnect
- interconnection
- intercontinental
- intercourse
- intercut
- interdenominational
- interdepartmental
- interdependence
- interdependent
- interdependently
- interdict
- interdiction
- interdisciplinary
- interest
- interested
- interestedly
- interest-free
- interest group
- interesting
- interestingly