Is mucc remi·tuit mess.

Is mucc remi·tuit mess.

(is * a pig * that falls before * acorn crop)

He is a pig that dies before the acorns fall.

In other words, "he has died a premature death." In early Ireland pigs were expected to feast and grow fat on mast (fallen nuts of forest trees, mostly hazel nuts and acorns) in early autumn. A pig that does not survive until the mast fall dies before its time. This line comes from the tale "Togail Bruidne Da Derga", where Fer Rogain speaks it of the doomed king, Conaire.

The expression is also found in the Annals of the Four Masters (M1155.6) in regard to the death of Maol Seachlainn, and is reinforced by another similar expression:

As muc rémhi-téth mes, as craobh riana bláth écc ind fhir h-isin. (... and a branch before its blossoming the death of that man).