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”