Artificial intelligent assistant

earthfast

earthfast, a.
  (ˈɜːθfɑːst, -fæst)
  [f. earth n.1 + fast a.]
  Fixed in the ground; cf. quot. 1869.

c 1000 ælfric Saints' Lives xvii. (1885) I. 130 Sume men synd swa ablende þæt hi bringað heora lac to eorðfæstum stane. 1868 G. Stephens Runic Mon. I. 199 No runic earthfast monument of any kind..has ever been found in any Saxon or German territory. 1869 R. B. Peacock Gloss. Lonsdale Dial., Earthfast, said of a stone appearing on the surface but fast in the earth. 1881 tr. Nordenskiöld's Voy. Vega I. ii. 97 A box..fixed to the ground with earthfast stakes and cross-bars.

Oxford English Dictionary

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