English · Phrasal verb Attested

knock up

In real, traceable use. Part of the curated seed collection; community review is coming.

Sense 1

Meaning · English

To put together, fabricate, or assemble, particularly if done hastily or temporarily.

Where it’s used: Used American English

Examples

I'll just knock up a quick demo for the sales presentation.

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).

Sense 2

Meaning · English

To awaken (someone) as by knocking at the door; rouse; call; summon; also, to go door-to-door on election day to persuade a candidate's supporters to go to the polling station and vote. See also knocker up.

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).

Sense 3

Meaning · English

To exhaust; wear out; tire out; to fatigue until unable to do more.

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).

Topics: Dated

Common questions

What does “knock up” mean?

To put together, fabricate, or assemble, particularly if done hastily or temporarily.

Is “knock up” formal or informal?

knock up is generally colloquial.