1. Prone to giggling

Derived forms: gigglier, giggliest

• overmatch
• overmodest
• overmuch
• overmuchness
• overnice
• overnight
• overnight bag
• overnight case
• overnighter
• overpass
• overpay
• overpayment
• overplay
• overplus
• overpopulate
• overpopulation
• overpower
• overpowering
• overpoweringly
• overpraise
• overpressure
• overprice
• overpriced
• overprint
• overproduce