Skynsemd

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

skynsemd

f. reason; vera með fullri ~, to be in one’s right senses (þá er vér erum údrukknir ok með fullri ~); kunna litla ~, to have little understanding (kunnum vér litla ~ til at skipa svá stórum málum); hafa ~ af e-u, to have knowledge of; þá muntu synja þess með ~, then thou must deny it, giving reasons for it; gjalda ~ e-s, af e-u, to give account of; krefja e-n ~ar fyrir e-t, af e-u, to call one to account for a thing.

Possible runic inscription in Younger Futhark:ᛋᚴᚢᚾᛋᛁᛘᛏ

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