Definition of knock someone up in English:

knock someone up

phrasal verb

  • 1British Wake or attract the attention of someone by knocking at their door.

    • ‘Eventually, after having no luck at all with the key, I had to go next door and knock them up.’
    • ‘I'll knock you up at five to seven and I'd like you downstairs for breakfast at seven sharp.’
    • ‘Some were formal duties, such as inspecting weights and measures or inspecting bridges, others were informal, such as knocking people up early in the morning for work.’
    • ‘One Lib Dem peer was pounding the pavements all day, knocking up voters.’
    wake, wake up, waken, awaken, call, rouse, arouse, get out of bed, get up
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  • 2informal Make a woman pregnant.

    make pregnant, impregnate, inseminate
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