þurfi
Þurfi is an archaic or dialectal Icelandic verb form historically associated with the verb þurfa, meaning to need. It is attested in Old Norse and in some late-medieval Icelandic texts, though it is no longer used in standard modern Icelandic. In contemporary language, the expression of necessity is handled by the present indicative form þarf and the conditional or past subjunctive form þyrfti, while the present subjunctive or other moods of the verb þurf-a are largely obsolescent. The form þurfi is thus primarily of interest to students of historical Icelandic grammar and textual criticism rather than everyday usage.
Morphology and use: In sources where it occurs, þurfi is described as belonging to the imperfect or