speak in tongues

Verb

speak in tongues (third-person singular simple present speaks in tongues, present participle speaking in tongues, simple past spoke in tongues, past participle spoken in tongues)

1. To speak in a language unknown to the speaker, especially when in a state of religious ecstasy; glossolalia.
   • 1611, Bible (King James Version):
     Acts 19:6:

     And when Paul had laid [his] hands upon them, the Holy Ghost came on them; and they spake with tongues, and prophesied.