fall through the floor

fall/go through the floor

if the price or value of something falls through the floor, it becomes very low House prices have gone through the floor this year.

Name	Pronounced	Usage
Narseh	-	Ancient Persian
Weland	-	Germanic Mythology, Anglo-Saxon Mythology
Radha	-	Hinduism, Indian, Telugu, Tamil, Kannada, Hindi, Marathi
Piroska	PEE-rosh-kaw	Hungarian
Ptolemy	TAHL-ə-mee (English)	History
Hristofor	-	Bulgarian, Macedonian