i Register
In some senses, upthrow is marked as archaic, poetic. Watch for register when choosing this word.
upthrow
verb 3noun 1
Definitions
verb
1
To throw or cast upwards.
For fifty tons of water were upthrown / By them per hour [...].
2
To throw up (a mass of material) from below, causing a fault.
3
To be thrown up from below, causing a fault.
noun
1
A fault in which a mass of material has been thrown up from below.
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