silliness

noun
1
behaviour that shows a lack of thought, understanding or judgement
حماقت, بی‌فکری, سبک‌سری, سبک‌مغزی, بی‌خردی
synonym foolishness
2
the fact of being stupid or embarrassing, especially in a way that is more typical of a child than an adult
حماقت, سبکسری, بچگانه بودن, بی‌فکری, مسخرگی
Children love the sheer silliness of his poems.
synonym ridiculousness