also: たあいのない
expression, i-adjective
silly; trivial; pointless; innocent
Describes talk, actions, or matters that lack seriousness, substance, or malice. Often used for light, harmless chatter or trivial concerns. The phrase is a fixed expression functioning as an adjective.
See also: 他愛もない
We got excited over silly chatter.
そんなたわいのないことで怒らないで。
Don't get angry over such a trivial thing.