The phonetic transcription of "forthwith" is /ˌfɔːθˈwɪθ/ in British English and /ˌfɔːrθˈwɪθ/ in American English. Click the 🔊 button to hear both pronunciations.
Synonyms for "forthwith": immediately, instantly, directly, promptly.
Example usage of "forthwith": "Start the car forthwith, please!". More examples on the page.