loyal loy‧al [ˈlɔɪəl] adjective
MARKETING if customers are loyal to a particular product, they continue to buy it and do not change to other products:
loyal to

• The chain is trying to appeal to customers loyal to other fast-food companies.

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loyal UK US /lɔɪəl/ adjective
COMMERCE, MARKETING a loyal customer always buys the same product, uses the same store, etc.: »

Supermarkets should reward their most loyal customers.

loyal to sb/sth »

Our customers remain loyal to the brand.

HR a loyal employee works for the same company for many years: loyal to sb/sth »

Training programmes encourage workers to remain loyal to their employers.

Financial and business terms. 2012.