12 letters
- stonemasonry19
- storyboarded19
- storytellers16
- storytelling19
- stridulatory17
- submaxillary30
- subsecretary21
- superciliary22
- supersensory19
- supplicatory25
- tercentenary19
- testamentary18
- thimbleberry26
- traditionary16
- trigonometry20
- trypanosomes21
- trypsinogens21
- tryptophanes23
- turbidimetry22
- usufructuary24
- valetudinary22
- vituperatory22
- voluntaryism24
- voluntaryist21
- whortleberry23
- wordsmithery23