wò​dǐ

undercover

卧底 臥底 wò//dǐ
undercover verb + noun
to work undercover; to go deep into an enemy's organization or a criminal gang to gather information or provide help from the inside

Were you undercover the night we met?

mole
an undercover agent or insider; a mole planted within a group

Frequency

Movie subtitles
17.3 per million appears in 4% of films
Written text
3.08 per million

Cross-References

Synonym

Sources