naivan

In a way that shows naive or foolish hope or belief, especially when the belief is unrealistic; now rare and mainly used in literary style.

In a way that shows innocence, lack of experience, or a tendency to trust too easily.

In a way that shows little experience of how people or situations really work, often by trusting too easily or failing to notice possible problems.

In a way that is too simple to be accurate or practical, often by ignoring important details, risks, or complexities.

In a straightforward but unsophisticated way, especially in technical contexts, without advanced techniques, optimization, or careful handling of edge cases.