Fjölga

As defined by A Concise Dictionary of Old Icelandic (Geir Zoëga):

fjölga

(að), v. to make more numerous; impers., ~r e-t, and refl., ~st, to become numerous, increase in number.

Possible runic inscription in Younger Futhark:ᚠᛁᚢᛚᚴᛅ

Also available in related dictionaries:

This headword also appears in dictionaries of other languages closely related to Old Icelandic.

• Old Norse - Cleasby & Vigfusson Dictionary
• Old Norwegian - Johan Fritzner's Dictionary