Definition from Wiktionary, the free dictionary
- Traditionally popular in Denmark, as a royal name.
-  Danskernes Navne, based on CPR data: 40 609 males with the given name Frederik have been registered in Denmark between about 1890 (=the population alive in 1967) and January 2005, with the last frequency peak in the 1990s. Accessed on 19 June 2011.
- A male given name.
- Frederik in Slovak dictionaries at korpus.sk