We can't rule on "crass", but "unfeasible" is attested in the OED from 1527 to the present day, and "infeasible" (first attested 1533) is indeed marked as "now rare".
Its first king, Sanakhte, is attested in reliefs from Maghāra in Sinai.
By some means, however, the tribe as such survived and is attested in imperial times.
The earliest Tamil writing is attested in inscriptions and potsherds from the 5th century bce.
The use of tones is attested in Chadic, Cushitic, and Omotic but in neither Semitic nor Amazigh.
Linear A is attested in Crete and on some Aegean islands from approximately 1850 bc to 1400 bc.
This, with the young girl and the gods, is attested in India in the Yajurveda and the Upanishads.
A more evolved script with linear signs of this kind is attested in various parts of Crete and was known in the Cyclades during the Late Palace Period.
Further Akkadian literary creation is attested in the epic of Atrahasis, a tale of humanity's punishment through pestilence and flood, preserved in fragmentary Old Babylonian and Assyrian versions.
The early popularity of subject matter based on Celtic tradition is attested in the five songs based on Breton lays with which the Cancioneiro da Biblioteca Nacional opens.
