There are numerous expressions that can be used as synonyms for the phrase "rate of pay." Some common examples include wage, remuneration, compensation, salary, hourly rate, pay scale, and income level. These terms all refer to the amount of money an employee is paid for their work, whether it is an hourly or annual basis. For instance, wage pertains to the amount of money earned for a fixed period of time while remuneration deals with the payment for services rendered. Meanwhile, a pay scale refers to the range of compensation available for specific job roles. Overall, the use of synonyms for the expression "rate of pay" can add additional variety and sophistication to any written or oral communication.