contradiction

noun
C1+
1
C1+
a lack of agreement between facts, opinions, actions, etc.
تناقض, ناسازگاری, مغایرت, تعارض
2
C1+
the act of saying that something that somebody else has said is wrong or not true; an example of this
رد, تکذیب, متناقض‌گویی
I think I can say, without fear of contradiction, that…
Now you say you both left at ten—that's a contradiction of your last statement.