reason1
/ˈriːzn ˈरीज़्न्/ noun 1 [C] a reason (for something/for doing something) ; a reason why.../that... a cause or an explanation for something that has happened or for something that somebody has done कारण, व्याख्या या औचित्य-वर्णन (किसी घटना या कार्य का)
He said he couldn’t come but he didn’t give a reason.
For some reason they can’t give us an answer until next week.
2 [C, U] (a) reason (to do something) ; (a) reason (for something/for doing something) something that shows that it is right or fair to do something युक्ति, दलील (किसी काम के सही या उचित होने की)
I have reason to believe that you’ve been lying.
You have every reason [you are completely right] to be angry.