Step 1: Understanding the Concept:
The question asks for a synonym of the word 'forbid'. A synonym is a word that has the same or nearly the same meaning as another word.
Step 2: Detailed Explanation:
The word 'forbid' means to authoritatively refuse to allow something.
Let's examine the options:
forward: This word means to send on or to advance. It is not related to 'forbid'.
prohibit: This word means to formally forbid something by law, rule, or other authority. It is a very strong and direct synonym for 'forbid'.
allow: This is an antonym of 'forbid'. It means to permit something.
order: This means to command or instruct someone to do something. While it relates to authority, it is not the same as forbidding an action.
Step 3: Final Answer:
The best synonym for 'forbid' from the given choices is prohibit.