samad, voluntary veil optional veil mandatory veil compulsory veil The word 'compulsive' is currently used to refer to obsessive behavior or strong psychological motivation.

"Compulsory" in legal jargon means "compelled against will," unlike "mandatory" which means "necessary before proceeding." "Compulsory military service" means a person is forced to join the military against their will, dictated by another person. "Mandatory military service" means a person must join the military for some reason, but there choice must be made by the person as to when he joins.