on the knocker
- idiom
- Archaic
- Every year, charities are on the knocker for donations during the holidays.
Examples
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Reporters were on the knocker for a statement after the scandal broke.
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Tom is on the knocker for a raise this year!
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Children went on the knocker around the neighborhood asking for treats.
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He is on the knocker!
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The volunteers were on the knocker for donations to support the local shelter.
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During the campaign, the team was on the knocker to ensure every voter was reached.
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She is on the knocker for a better job and has been attending networking events.
Synonyms
Demanding attention or action again and again in a firm way
Annoying because someone keeps asking for something
Very eager and determined to get something
Antonyms
How Persistent
Surface Forms
Morphology
on + the + knocker
The phrase evokes the idea of being active or persistent ('on' = active) combined with a root related to knocking/asking, so there is a partial, metaphorical link between constituents and the MWE meaning. However, 'knocker' is usually understood as a hardware item and the whole expression is regional/idiomatic, so a B1 learner who only knows the literal constituents would likely not reliably infer the intended sense without exposure.
Etymology
On the knocker may come from people who went from house to house, knocking the knocker again and again to ask for money or sell things. That's why it now means 'being persistent or insistent in asking'.