to sell something that is unsuitable for the person buying it:
• Half a million people were missold a personal pension, many being wrongly advised to leave company pension schemes.
— mis-selling noun [uncountable] :
• the mis-selling of time-share apartments
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mis-sell UK US verb [T] UK COMMERCE
► to sell something that is not suitable for the person who buys it: mis-sell sth to sb/mis-sell sb sth »
The finance industry has mis-sold mortgages to people who cannot afford them.
»Millions of people were mis-sold mortgage endowments.
Financial and business terms. 2012.