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to tell (to do); to order; to direct; to instruct
to tell (on someone); to report; to snitch
to often say; to be used to saying
母に弟の悪事を言いつけてしまった。
I told on my brother's mischief to our mother.
上司に仕事を言いつけられて残業した。
My boss ordered me to do work, and I ended up working overtime.
先生に言いつけるよと友達を脅した。
I threatened my friend by saying I would tell the teacher.