9 letters
- orientate10
- originate12
- overtrain14
- parricide16
- partition13
- patricide16
- patriotic15
- pediatric16
- perdition14
- peridotic16
- podiatric16
- predation14
- predictor16
- preordain14
- pretorian13
- procreant16
- raconteur14
- radiation11
- rancidity16
- raticides13
- rattooned11
- reactions13
- recondite14
- recontact16
- recording16
- recordist13
- recrating15
- rectorate12
- rectorial13
- redacting16
- redaction14
- redactors13
- reductant15
- reduction15
- reedition11
- reincited14
- reindicts14
- reliction14
- rendition12
- reordains11
- restraint10
- retardant11
- retarding13
- retinoids11
- retirants10
- retorting12
- retracing15
- retracted13
- retractor12
- retrained11
- retroacts12
- retrodict13
- rhinoceri15
- serration10
- sonicated14
- stationed11
- stationer10
- striation10
- taconites13
- tarriance13
- terracing15
- tetracids13
- threnodic16
- throatier11
- tinctured15
- titration10
- torridest10
- torridity12
- torrified13
- tortricid13
- traceried13
- tractions13
- tradition11
- transited11
- trattorie9
- trepidant14
- tretinoin11
- triatomic15
- trichinae15
- tricornes13
- tricotine13
- trihedron13
- trilinear11
- trisector12
- tritiated10
- triticale13
- truncated15
- tunicated15
- tyrocidin16
- undercoat15
- urticated14
- vindicate18