The Aramaic, Hebrew, Latin and Greek that is translated as “fast” in English is translated in Isthmus Mixe as “going without food to worship God” and in Lacandon as “leaving eating in order to talk to God.” (Source: B. Moore / G. Turner in Notes on Translation 1967, p. 1ff.)
In Vidunda it is translated as “resting to eat.” (Source: Pioneer Bible Translators, project-specific translation notes in Paratext)