めったにない

The expression めったにない literally translates to "rarely" or "not often". It is used to describe events or situations that happen infrequently or are not typical. Though it can be used with verbs in their negative form, it is most commonly paired with ない to emphasize the rarity of the action.

In conversation and writing, using めったにない conveys a sense of surprise or uniqueness regarding the rarity of the subject. For example, if you see a celebrity in your town, you might say that it's めったにない for such an event to happen.

It's also worth noting that めったに can sometimes imply that the speaker has a positive attitude towards the uncommon event being described.