• WordNet 3.6
    • v bastardise declare a child to be illegitimate
    • v bastardise change something so that its value declines; for example, art forms
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Century Dictionary and Cyclopedia
    • bastardise See bastardize.
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Chambers's Twentieth Century Dictionary
    • v.t Bastardise to prove to be a bastard
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Chambers's Twentieth Century Dictionary
Fr. bâtard; O. Fr. fils de bast, son of the pack-saddle, bast (bât) being a coarse saddle for beasts of burden.


In literature:

What herald can say this without bastardising the second Earl of Northumberland?
"Notes and Queries, Number 196, July 30, 1853" by Various