Definition of "tattletale" in English

adjective

1. telltale; giveaway

noun

1. One who tattles (reports others' wrongdoings), often a child seeking attention.

2. One who gossips, often for the sake of attention.

verb

1. (ambitransitive, colloquial, chiefly childish) To act as a tattletale; to tell on; to give away, reveal, or expose.