Customary, normal (5)
I believe the answer is:
usual
I believe this clue is a double definition.
'customary' is the first definition.
(similar in meaning)
'normal' is the second definition.
(I've seen this before)
(Other definitions for usual that I've seen before include "familiar" , "Normally done" , "Ordinary" , "Typically occurring" , "Expected" .)