premium rate
noun [ C ]
COMMUNICATIONS UK ukusa higher rate that a phone company charges customers for special phone numbers:
Anyone who wants to respond can dial at premium rate of around £1.50 a minute and leave a message.
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standard rate
premium-rate
adjective [ before noun ] (also premium rate)
The are contactable 12 hours a day, seven days a week by calling a premium-rate number.
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standard-rate