Regular in the sense of everyday, in Hebrew, is רגיל . This word comes from רגל – foot, something that moves at a regular pace (despite their similarity, the English regular most likely did not derive from רגיל, nor vice-versa).
רגיל also means used to, as in:
She is used to getting up every morning at seven o’clock.
Whoever comes on a regular basis to class (to the lessons) will receive a reimbursement from the state.