seismogram/ʹsiezməgram/ noun

• rat-arsed
• rat-a-tat
• ratatouille
• ratbag
• ratchet
• ratchet wheel
• rate
• -rate
• rateable
• rateable value
• ratel
• rate of exchange
• ratepayer
• rather
• rathskeller
• ratify
• rating
• ratio
• ratiocinate
• ration
• rational
• rationale
• rationalise
• rationalism
• rationalize