1. Change something so that its value declines; for example, art forms
   - bastardise [Brit] 
2. Declare a child to be illegitimate
   - bastardise [Brit]

Derived forms: bastardized, bastardizes, bastardizing

See also: bastardization

Type of: adjudge, corrupt, debase, debauch, declare, demoralise [Brit], demoralize, deprave, hold, misdirect, pervert, profane, subvert, vitiate

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