Mammoth Uncensored Word List:
34 - 14 letter words starting with sh

shadowcastings shadowgraphers shadowgraphies shadowgraphist shamefacedness shamefulnesses shameworthiest shareabilities sharpshootings shatterproofed shatterproofer sheepishnesses sheepshearings sheetlightning shellfisheries sherardisation sherardization shillingsworth shillyshallied shillyshallier shillyshallies shockabilities shockabsorbent shockabsorbers shockabsorbing shockingnesses shortcircuited shortsightedly shoulderblades showerproofing shrewishnesses shrinkwrappers shrinkwrapping shuttlecocking