Fierce (adjective)
جذباتی، وحشی، تند
having or displaying an intense or ferocious aggressiveness.
Example: “fierce fighting continued throughout the day”
Constrain (verb)
محدود کرنا، روکے رکھنا، پابند کرنا
compel or force (someone) to follow a particular course of action.
Example: “children are constrained to work in the way the book dictates”