/ snɪtʃ; NAmE / verb
[ v ] snitch (on sb) (to sb) ( informal , disapproving ) to tell a parent, teacher, etc. about sth wrong that another child has done
SYN sneak :
Johnnie snitched on me to his mom.
► snitch noun :
You little snitch! I'll never tell you anything again!
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WORD ORIGIN
late 17th cent.: of unknown origin.