irrealis
An irrealis construct.
[…] then it would make sense to view Australian past irrealises as TAM forms combining a modal stative predicate (conveying e.g. a capacity, expectation, or desire state) with a past imperfective content.
Where it comes from
Learned borrowing from New Latin irreālis (“intangible, immaterial”), from Latin in- (“un-: not”) + reālis (“real, material, composed of physical things”), from res (“thing”) + -ālis (“-al: forming adjectives”). Doublet of irreal.
Adapted from the Wiktionary entry irrealis (CC BY-SA 4.0).