1. Hanky-panky → Mischief or secret activity.
2. Nitty-gritty → The most important details.
3. Super-duper → Really great.
4. Helter-skelter → In disorder, chaotic.
5. Easy-peasy → Very simple.
6. Wishy-washy → Weak or indecisive.
7. Hugger-mugger → Secretive or confused.
8. Hoity-toity → Snobbish or arrogant.
9. Hocus-pocus → Magic or nonsense.
10. Roly-poly → Chubby and round.