勉強したくない

don't want to study

→ 勉強
phrase Rare #25,594
don't want to study 勉強したい means “want to study”; changing たい to たくない makes it negative. The subject is often omitted and understood from context.
JA: 明日は朝早いから、今夜は勉強したくない。
EN: I have to get up early tomorrow, so I don't want to study tonight.

彼は勤勉だったけれどもときには勉強したくないこともあった

Although he was diligent, there were times when he didn’t want to study.

本当に私の家では勉強したくない

Do you really not want to study at my house?

数学は私が最も勉強したくない教科です

Math is the subject I want to study the least.

今は勉強したくない

I don't want to study right now.

今日は勉強したくない

I don't feel like studying today.

勉強したくない

I don't want to study.

今夜は勉強したくない

I don't feel like studying tonight.

今日は勉強したくない

I don't feel like studying today.