People with interest in property mostly want to stop falsehoods (7)

'people with interest in property' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.

'mostly want to stop falsehoods' is the wordplay.
'mostly' means to remove the last letter (most but not all of the word).
'want' becomes 'need' (synonyms).
'to stop' indicates putting letters inside (stop can mean to plug a hole in something).
'falsehoods' becomes 'lies' (lie is a kind of falsehood).
'need' with its last letter removed is 'nee'.
'nee' inserted into 'lies' is 'LIENEES'.

Can you help me to learn more?