[4] þreyta ‘let up’: The verb normally has the sense ‘strive hard, contend’, while the sense ‘drive to exhaustion’ is usually found in ON only in the passive (adjectival p. p. þreyttr ‘exhausted’). However, Fritzner: þreyta 5 cites þreyttust öflin af mœðinni ‘their strength gave out through weariness’ from Breta sǫgur, which comes close to the present usage. It seems likely that the meaning, and the impersonal usage, in the Þjóðólfr context are influenced by þrjóta ‘fail, end, give out’, of which þreyta is the causative counterpart.