epact /ēˈpakt/

1. The moon's age at the beginning of the year
2. The excess of the calendar month or solar year over the lunar

• flatting
• flattings
• flattish
• flatty
• flat tyre
• flat tyres
• flatulence
• flatulences
• flatulencies
• flatulency
• flatulent
• flatulently
• flatuous
• flatus
• flatuses
• flatware
• flatwares
• flatways
• flat white
• flat whites
• flatwise
• flatworm
• flatworms
• flat-woven
• flaught