wiretapping
Concise Oxford English Dictionary © 2008 Oxford University Press:
wiretapping/ˈwʌɪətapɪŋ/
▶noun the practice of tapping a telephone line to monitor conversations secretly.
– derivatives
wiretap noun & verb,
wiretapper noun.
wiretap noun & verb,
wiretapper noun.
'wiretapping' also found in these Oxford entries:

