tattletale

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++tat·tle·tale /ˈtætlteɪl/ noun [countable]  American English informalTELL A SECRET a word meaning someone who tattles – used by or to children 打小报告者，搬弄是非者〔儿语〕 SYN British English telltale

Examples from the Corpus

tattletale• She scolded another student for being a tattletale.

tat·tle·tale nounChineseSyllable  

someone – meaning Corpus a word who used tattles

tattletale
tat‧tle‧tale /ˈtætlteɪl/ noun [countable]
American English informal a word meaning someone who tattles – used by or to children
   SYN  telltale British English

tat·tle·taleBrE /ˈtætlteɪl/ 🔊NAmE /ˈtætlteɪl/ 🔊 (NAmE) (BrE tell·tale) noun (informal, disapproving) a child who tells an adult what another child has done wrong 向大人告另一个孩子状的小孩；小告密者