• fmcg,
• frig,
• frgo,
• frege,
• farge,
• arl,
• afrg,
• alg,
• zug,
• brg,
• feg,
• ferg,
• fog,
• furg,
• cfg,
• fci,
• fcl,
• xrt,
• urb,
• fkg

• frigg,
• frisk,
• fries,
• fraga,
• fig,
• freak,
• frog,
• Fregoe,
• FRIAS,
• frogs,
• fry,
• fog,
• fress,
• frase,
• frick,
• friis,
• FRAG,
• frizz,
• frigo,
• frix,
• frogge,
• fri.,
• fresh,
• frese,
• fraze,
• frock,
• FRS,
• frees,
• freas,
• frigga,
• fruge.

The plural form of "frg" is "frgs".

The singular form of the word "frg" is still "frg" as it is an acronym and does not have a specific singular or plural form.