1QUANT 极少量;一点儿;些微 If you say that there is not an iota or not one iota of something, you are emphasizing that there is not even a very small amount of it. 极少量;一点儿;些微 [emphasis]
He's never shown an iota of interest in any kind of work. [+ of]
他从来没有对任何工作表现出一点儿兴趣。
2PHRASE (用于强调否定)一点儿也不,一点儿也没有 You can use an iota or one iota to emphasize a negative statement. Not an iota or not one iota means not even to a small extent or degree. (用于强调否定)一点儿也不,一点儿也没有 [emphasis]