9 letters
- perianths15
- perishing17
- petitions13
- phonating18
- phonation16
- phoronids16
- photostat14
- pintadoes14
- poetising15
- pointiest13
- poisoning16
- pondering17
- ponderosa14
- poortiths14
- portioned14
- potations13
- pothering17
- pottering15
- predating16
- predation14
- prenotion14
- presiding16
- priesting15
- printhead16
- printings16
- prisoning16
- prodigies15
- progestin15
- prognosed16
- pronating16
- pronation14
- protistan13
- protonate13
- rationing13
- ratooning13
- rattening13
- rattooned11
- reanoints11
- reasoning13
- rendition12
- repasting15
- repotting15
- reshaping17
- reshining15
- resitting12
- respading16
- respiting15
- restating12
- retaining13
- retasting12
- retinitis10
- retinoids11
- retinting13
- rhodonite13
- rhodopsin16
- rigadoons13
- rigatonis12
- riposting15
- rogations12
- rotations10
- sainthood13
- sapogenin16
- senhorita12
- seriating12
- serotonin11
- signorina13
- signorine13
- sintering13
- siphoning18
- sopranino14
- sortieing12
- sortition10
- spaghetti16
- sphenodon17
- spiriting15
- spraining16
- spreading16
- sprinting16
- statehood12
- stationed11
- stationer10
- straining13
- stranding14
- striating12
- striation10
- stringent13
- tandooris11
- tarnished13
- tattering12
- tattooers9
- tattooing12
- tetragons12
- tetrapods13
- therapist14
- therapsid15
- theropods15
- thionates12
- thionines13
- thiotepas14
- thirsting14
- thorniest12
- threading15
- threaping17
- threating14
- throating14
- tightrope16
- tiptoeing15
- titanites10
- tithonias12
- titrating12
- titration10
- tittering12
- toadstone11
- toothiest11
- topiaries12
- tornadoes11
- tottering12
- tradition11
- trainings13
- traipsing15
- transient11
- transited11
- trapesing15
- trepidant14
- tretinoin11
- trinities10
- tripodies13
- triptanes13
- tritheist11
- trithings14
- tritiated10
- troponins14