9 letters
- preordain14
- president14
- pretorian13
- preunited15
- priedieux21
- printhead16
- privation17
- profanity18
- prolixity22
- promenade17
- protamine16
- proteides13
- protended15
- provident18
- proximate22
- proximity24
- pteridine14
- pterygoid17
- pyrenoids16
- pyridines16
- pyridoxal23
- pyroxenes22
- pyroxenic25
- radiation11
- rancidity16
- readopted14
- reappoint16
- reception16
- recipient16
- recondite14
- redaction14
- redeposit13
- redingote13
- reediting13
- reedition11
- reignited13
- reincited14
- reinvited15
- rendition12
- renovated15
- reoxidize26
- repainted14
- repayment18
- repeating15
- replanted15
- repletion14
- reposited13
- reprinted14
- reptilian14
- repudiate14
- resinated11
- resonated11
- retinoids11
- retrained11
- sedentary13
- seniority12
- sparteine13
- tailender12
- taxidermy22
- terpenoid14
- terpineol14
- tetroxide17
- thyroxine21
- tinderbox21
- toenailed12
- topiaries12
- torpidity15
- tourneyed14
- toxaphene22
- tradition11
- trapezoid22
- trepanned15
- trephined16
- trepidant14
- treponema16
- trioxides17
- triploidy16
- tripodies13
- tyrocidin16
- unexpired22
- videotape17
- xerophyte23