You may hear about something being deemed an unsuitable investment. This means that a broker recommends an investment without regard to the customer’s needs, objectives , or risk tolerance.
Brokers are duty bound to have a certain level of knowledge about their customer’s finances. They should be recommending investment strategies based on that knowledge.
Unsuitability does not refer to a singular investment. All investment carries some risk. It’s more a case of promoting the wrong TYPE of investment, based on the customer’s profile.