In my native language, there is a word that has a meaning similar to stupid, but it is friendly and usually used for a close friend or loved one. It even helps the target people to feel happy in some cases, especially romantic situation where the "stupidity" stems from a cute action or misunderstanding.
Is there any similar word in English?
Best Answer
I assume OP is really looking for a word meaning "stupid", but with positive connotations (along the lines of "cuddly" for "fat", and maybe "homely" for "ugly").
Teachers, for example, may speak of less able students. But that's just because sometimes they can't avoid referring to such pupils (and it would be unprofessional to call them "stupid").
In normal conversational contexts, any reference to someone's lack of intelligence is likely to be seen as impolite and/or hurtful, so it's probably best avoided unless you intend to be disparaging.
OP might feasibly get away with uncomplicated, (or perhaps slow, simple, naive), but generally speaking such terms will be recognised for what they are (euphemisms) - so again, best avoided.
One common approach is to "soften" the label with humour. For example, you can say someone's...
EDIT: Following OP's later comment, it's apparent he wants a friendly/affectionate term by which to address his friend, who's showing a lack of understanding in some particular context. That's not really the same thing as trying to explain to others that your friend is significantly less intelligent than the average.
I suggest suitable phrasing in OP's context would be something slightly "whimsical", such as...