11 letters
- phonotactic23
- photometric22
- photostatic19
- phototactic22
- picarooning21
- pirouetting18
- pitapatting20
- pontificate21
- potentiator15
- potlatching23
- potshotting19
- precipitant21
- predicating21
- predication19
- procreating20
- procreation18
- propagation20
- propagative23
- protagonist17
- protectants18
- protections18
- protonating18
- protonemata18
- protopathic22
- protracting20
- protraction18
- protractive21
- provocation22
- provocative25
- radioactive19
- ratiocinate15
- reattaching19
- reattacking21
- reattaining15
- recantation16
- recitations15
- recitativos18
- recognition18
- renographic22
- repartition15
- replicating21
- replication19
- reproaching22
- restitching19
- retaliating15
- retaliation13
- retinopathy19
- retroacting17
- retroaction15
- revocations19
- rhetorician17
- rhizoctonia26
- ricocheting22
- spaghettini19
- teratogenic17
- teratologic17
- thiocyanate19
- thixotropic26
- thorianites14
- tomographic24
- topnotchers20
- topocentric21
- topographic24
- totipotency20
- trepanation16
- trepidation16
- unpatriotic19
- vacationers19
- vacationing22
- vacationist19
- variegating20
- variegation18
- vaticinated20
- vaticinates19
- vaticinator19
- videotaping22
- vinaigrette18
- voiceprints22