Tethys /tēˈthis, tethˈis/

1. A sea nymph, wife of Oceanus
2. A sea that extended in Mesozoic times from Mexico across the middle Atlantic and the Mediterranean into the centre of Asia (geology)
3. The third natural satellite of Saturn

• play fast and loose
• playfellow
• playfellows
• play fine
• play first fiddle
• play footsie
• play footsie with
• play for love
• play for safety
• play for time
• playful
• play full
• playfully
• playfulness
• playfulnesses
• play games with
• playgirl
• playgirls
• play-goer
• play-goers
• play-going
• playground
• playgrounds
• playgroup
• playgroups