10 letters
- pratincole18
- precasting19
- precaution18
- precenting20
- precutting20
- predicting20
- prediction18
- prenticing20
- preuniting18
- princeling21
- proficient20
- projecting28
- prosecting19
- protecting19
- protending18
- punctation19
- puncturing22
- purgations17
- purloining19
- purtenance19
- quaternion22
- quinacrine25
- radiogenic17
- readopting17
- receipting19
- recitation14
- recounting18
- recoupling21
- recruiting17
- reenacting17
- regulation15
- reignition14
- reinciting17
- reinducing19
- relocating17
- remounting18
- renaturing15
- renouncing19
- renovating18
- renunciate16
- repainting17
- repatching21
- replanting18
- repositing16
- reprinting17
- repugnance21
- repugnancy23
- reputation15
- resinating14
- resonating14
- retouching19
- retraining14
- reunionist13
- ruinations13
- ruminating18
- rumination16
- saprogenic19
- sauntering15
- sectioning17
- sonicating17
- speciating19
- speciation17
- suctioning18
- supergiant17
- supertonic18
- supinating18
- supination16
- tincturing18
- toenailing15
- tourneying17
- transgenic17
- trepanning18
- trephining19
- tripinnate15
- truncating18
- truncation16
- ulcerating18
- ulceration16
- uncovering22
- uncreating18
- unearthing17
- unexciting25
- ungainlier16
- unmitering18
- unneurotic17
- unoriginal16
- unpedantic20
- unplaiting19
- unpregnant19
- unromantic19
- unteaching20
- untreading16
- upreaching22
- uraninites13
- urinations13
- urogenital15
- urticating17
- urtication15
- voiceprint21