serrer Learn Unstarted Summary The French translation for “to tighten” is serrer. Practice Lesson "to tighten" Practice (1) Lesson Learn Lesson words to tighten etc. View all lesson words Lesson phrases This lesson has no phrases. Themed Courses Miscellaneous 197 Part of Speech Courses Verbs (all parts) 79 Verbs (-er infinitives) 17 Verbs (infinitives) 25 Acknowledgements Audio Google text-to-speech