10 letters
- septenarii14
- sharpening19
- shattering15
- shortening16
- smartening17
- smattering16
- smothering18
- snippetier17
- spattering16
- springtime19
- stationery13
- stationing14
- steamering16
- stenotherm16
- stentorian12
- stepmother18
- stepparent17
- stoppering19
- straighten15
- strengthen16
- tangerines14
- tarnishing16
- tempesting19
- tenantries12
- teratogens13
- terminates14
- tetanising14
- theorising15
- thorianite13
- threonines14
- tiemannite15
- tighteners15
- tightropes17
- tormenting17
- transiting14
- transition12
- trephining19
- treponemas17
- tretinoins12
- tripinnate15
- tryptamine19
- tryptophan21
- tympanites19
- typographs22
- yeomanries16