mandatory
adj.adj. describing something that you must do because of a rule or law. You do not have a choice in the matter.
adj. required by law or mandate; compulsory. Frequently used in legal, administrative, or educational contexts to indicate an obligatory action.
Wearing a seatbelt is mandatory in most countries.
The company made the safety training mandatory for all new employees to ensure compliance with insurance regulations.
While the initial proposal suggested voluntary participation, the committee eventually rendered the vaccinations mandatory to safeguard the health of the broader student population.
From Late Latin mandatorius (“of or belonging to a mandator”), from mandātor (“one who commands”), equivalent to mandate + -ory; see mandate.
Typically functions as an attributive adjective before a noun or a predicative adjective after a linking verb.
It is mandatory to you to attend.It is mandatory for you to attend.When specifying the person affected, the adjective takes the preposition 'for', not 'to'.