gazunder

• (Received Pronunciation) IPA^(key): /ɡəˈzʌn.də/
• (General American) IPA^(key): /ɡəˈzʌn.dɚ/
• Rhymes: -ʌndə(ɹ)

Blend of gazump +‎ under

gazunder (third-person singular simple present gazunders, present participle gazundering, simple past and past participle gazundered)

1. (British, colloquial) To reduce the offer price of a property after agreeing to a higher one (normally just before contracts are exchanged)

• gazump

Because it "goes under" the bed. Correct - particularly colloquial in north of England - refers to pot for night soil which was kept under the bed, as toilets were outside (or even down the street).

• guzunder

gazunder (plural gazunders)

1. (British) A chamber pot.
   • 2016, Alan Moore, Jerusalem, Liveright, published 2016, page 318:

     While Frank and Walt and Lou and Tommy had looked on, their mam had filled the guzunder up to its rim with a grotesque and undiscriminating mix of spirits […].

• ungrazed