Family name origins & meanings
- Polish : from a reduced form of the personal name Isaak (see Isaac).
- Polish and Hungarian (Szák) : from Polish sak, Hungarian szák, ‘fishing net’, ‘sack’, hence a metonymic occupational name for a maker of nets or sacks.
- Dutch : variant of Zack, a short form of the personal name Zacharias or Isaak.
- Jewish (Ashkenazic) : variant spelling of Sack.