obligatory
Definition
Required by a rule, law, or social custom; mandatory.
한국어 규칙, 법률 또는 사회적 관습에 의해 요구되는; 강제적
Example
"Wearing a helmet on the construction site is obligatory for safety."
Required by a rule, law, or social custom; mandatory.
한국어 규칙, 법률 또는 사회적 관습에 의해 요구되는; 강제적
"Wearing a helmet on the construction site is obligatory for safety."