backstabbing /ˈbækˌstæbɪŋ/ noun Learner's definition of BACKSTABBING
[noncount] US
: harmful and unfair things that are said or done to hurt the reputation of someone背后中伤；暗箭伤人 — backstabber
/ˈbækˌstæbɚ/ noun, plural backstabbers [count]
— backstabbing
adjective, always used before a noun