ETYMOLOGY
adjective: from Latin decurtatus, pa. pple. of decurtare (to cut off, curtail)
verb: from participial stem of Latin decurtare + -ate
EXAMPLE
“…hee sendes for his Barber to depure, decurtate, and spunge him, whome hauing not paide a twelmonth before, he now raines downe eight quarter angels into his hande…”
From: Lenten Stuffe
By Thomas Nashe, 1599
Lexicophilia 