preregister ( synonym found)
Definition of preregister:

°To register for something (especially for a course of education) prior to its start.
°To register or enroll a person (especially a student) prior to the start of something.
Definition of preregister:

°To register for something (especially for a course of education) prior to its start.
°To register or enroll a person (especially a student) prior to the start of something.
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