Kirill Ignatchenkoadded a note 9 years ago

hamper
: to slow the movement, progress, or action of (someone or something)

prohibit
: to order (someone) not to use or do something
: to say that (something) is not allowed
: to make (something) impossible to do

to hamper someone or something is to get in their way or make it difficult for them to work

To prohibit something is to forbid it
*Smoking is prohibited