ppl. a. Rendered or declared illegitimate; debased, degenerate.
1611. Cotgr., Abastardi … sophisticated, bastardized.
1859. Darwin, Orig. Spec., ix. (1873), 247. Bastardised and deteriorated offspring. Ibid. (1871), Desc. Man, I. ii. 62. Abbreviated and bastardised languages.
