14 letters
- princelinesses23
- proscriptively30
- pyelonephritic29
- pyelonephritis26
- pyrheliometers25
- pyrheliometric28
- quantitatively32
- radiolabelling24
- radiotelegraph23
- radiotelemetry21
- radiotelephone22
- radiotelephony24
- reaccelerating24
- rebelliousness21
- redevelopments27
- relentlessness18
- reliablenesses20
- relinquishment32
- relubrications23
- remuneratively26
- reproductively29
- selflessnesses20
- selfsamenesses22
- semiporcelains25
- shellfisheries23
- socioreligious21
- spellbindingly30
- subdevelopment31
- substitutively26
- superelevating26
- superelevation24
- syringomyelias25
- telangiectases21
- telangiectasia21
- telangiectasis21
- telangiectatic24
- teleconference26
- telefacsimiles25
- telemarketings25
- telemetrically25
- telencephalons26
- teleologically25
- telepathically27
- telephonically28
- teleportations19
- teleprocessing24
- telescopically28
- teletypewriter23
- televangelisms26
- televangelists23
- thermoelectric26
- thermoelements24
- timelessnesses19
- tirelessnesses16
- tonelessnesses17
- tortoiseshells18
- unattractively26
- underdeveloped27
- unintellectual24
- unintelligible25
- unintelligibly27
- unlikelinesses23
- unlovelinesses23
- unregenerately22
- unresponsively27
- untimelinesses21
- unwieldinesses22
- violoncellists25
- vitellogeneses23
- vitellogenesis23
- vituperatively29
- weltanschauung29
- wheelbarrowing29