10 letters
- restitches15
- restricted14
- retouchers16
- retrodicts14
- retrospect16
- rheometers15
- rheostatic15
- rhymesters17
- rhytidomes18
- rocketries17
- rotameters13
- seborrheic18
- semitropic19
- sociometry18
- spermaceti19
- sperrylite16
- sphericity20
- spirochete18
- spirometer16
- spirometry18
- splotchier19
- stenotherm16
- stepmother18
- stereotype15
- stereotypy17
- stretchers15
- stretchier15
- supermicro20
- tachometer18
- temporised17
- temporises16
- temporizer25
- temporizes25
- terpolymer19
- tetrameric16
- tetraspore13
- theorizers21
- thermistor15
- thermopile19
- thermosets15
- threescore15
- thymocytes22
- thyristors14
- tightropes17
- tiresomely16
- tormenters14
- tremolites14
- trichocyst20
- trichotomy20
- trichromat18
- trimesters13
- trimorphic21
- trisectors13
- trumperies17
- trumpeters17
- typescript21
- typewriter18
- typewrites18
- viscometer20
- viscometry22
- vitrectomy22
- xerophytes24
- xerophytic27