contactless
Word family
Synonym discussion
Sense: adjective/1
'Contactless', 'cashless', 'wireless', and 'tap-to-pay' often appear in modern payment settings, but they do not mean the same thing. 'Contactless' focuses on the method: you pay by bringing a card, phone, or watch close to a reader. 'Cashless' is broader and only means that no coins or banknotes are used, so a chip-and-PIN purchase is cashless but not contactless. 'Wireless' is broader again, because it can describe many kinds of technology that work without cables, not just payment systems. 'Tap-to-pay' is the most consumer-friendly term and often appears in menus, signs, or adverts. If a shop accepts contactless cards, it is talking about the reading method; if a shop is cashless, it is talking about the whole payment policy.
Common collocations
Etymology
The word 'contactless' was formed in modern English from 'contact' and the suffix '-less', literally meaning 'without contact'. It first had a broad literal sense, but it became especially common in retail and transport when cards and phones began sending payment data without touching the machine. In present-day everyday English, it is strongly associated with tap-style payment technology.