くよくよto fret (over), to brood (about), to mope, to worry, worriedly, (fretting) constantly, (worrying) over this and that, (obsessing) to no end

将来(しょうらい)のことをくよくよと心配(しんぱい)する。

To constantly fret over the future. {to fret (over), to brood (about), to mope, to worry, worriedly, (fretting) constantly, (worrying) over this and that, (obsessing) to no end}

くよくよしていないでパーッと騒(さわ)ごう！

Stop fretting and let's party! {to fret (over), to brood (about), to mope, to worry, worriedly, (fretting) constantly, (worrying) over this and that, (obsessing) to no end}

舞台(ぶたい)で失敗(しっぱい)をしたことをくよくよ悩(なや)んでいます。

I'm brooding about the mistake I made on stage. {to fret (over), to brood (about), to mope, to worry, worriedly, (fretting) constantly, (worrying) over this and that, (obsessing) to no end}

いつまでもくよくよと後(うし)ろ向(む)きでいるのは時間(じかん)の無駄(むだ)です。

It's a waste of time to constantly fret and be stuck in the past. {to fret (over), to brood (about), to mope, to worry, worriedly, (fretting) constantly, (worrying) over this and that, (obsessing) to no end}

少(すこ)し仕事(しごと)を間違(まちが)っただけでくよくよする彼女(かのじょ)はとても繊細(せんさい)です。

She is very sensitive, fretting over just a slight mistake at work. {to fret (over), to brood (about), to mope, to worry, worriedly, (fretting) constantly, (worrying) over this and that, (obsessing) to no end}