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Definition of Knock up
1. Verb. Make pregnant. "He impregnated his wife again"
Exact synonyms: Bang Up, Impregnate, Prang Up
Generic synonyms: Fecundate, Fertilise, Fertilize, Inseminate
Related verbs: Impregnate
Derivative terms: Impregnation
Generic synonyms: Fecundate, Fertilise, Fertilize, Inseminate
Related verbs: Impregnate
Derivative terms: Impregnation