| Prefix with skirt or series | 27 |
| Prefix with skiing or sailing | 29 |
| Prefix with skeleton or spore | 29 |
| Prefix with skeleton or plasm | 29 |
| Prefix with sked or skid | 24 |
| Prefix with ship or slip | 24 |
| Prefix with sex or cycle | 24 |
| Prefix with septic or tank | 26 |
| Prefix with sect or cycle | 25 |
| Prefix with scope or style | 26 |
| Prefix with scope or skeleton | 29 |
| Prefix with scope or photo | 26 |
| Prefix with scope or phone | 26 |
| Prefix with scope or meter | 26 |
| Prefix with scope or logical | 28 |
| Prefix with scient or potent | 28 |
| Prefix with school or war | 25 |
| Prefix with school or season | 28 |
| Prefix with saccharides | 23 |
| Prefix with sac or duct | 23 |
| Prefix with room or date | 24 |
| Prefix with rocket or fit | 25 |
| Prefix with right or reader | 27 |
| Prefix with ribonucleic | 23 |
| Prefix with revisionist | 23 |
| Prefix with red or structure | 28 |
| Prefix with Raphaelite | 22 |
| Prefix with rail or tone | 24 |
| Prefix with rail or theist | 26 |
| Prefix with rail and gram | 25 |
| Prefix with quark or shark | 26 |
| Prefix with prove or solve | 26 |
| Prefix with proliferation | 25 |
| Prefix with professional | 24 |
| Prefix with print or trust | 26 |
| Prefix with pressure or point | 29 |
| Prefix with present or potent | 29 |
| Prefix with present or bus | 26 |
| Prefix with potent or present | 29 |
| Prefix with pose or view | 24 |
| Prefix with port or play | 24 |
| Prefix with port or plant | 25 |
| Prefix with port or pad | 23 |
| Prefix with polar or cameral | 28 |
| Prefix with poise or nox | 24 |
| Prefix with pod or tope | 23 |
| Prefix with pod or stere | 24 |
| Prefix with pod or motor | 24 |
| Prefix with pod or cycle | 24 |
| Prefix with pod and plane | 25 |
| Prefix with plus or name | 24 |
| Prefix with plunk or plop | 25 |
| Prefix with plunk or flop | 25 |
| Prefix with play or step | 24 |
| Prefix with play or scope | 25 |
| Prefix with play or cast | 24 |
| Prefix with play or band | 24 |
| Prefix with play or act | 23 |
| Prefix with plasm or type | 25 |
| Prefix with plasm or morphic | 28 |
| Prefix with plasm or derm | 25 |
| Prefix with plasm or classic | 28 |
| Prefix with plasm and morph | 27 |
| Prefix with plane, to a Brit | 28 |
| Prefix with plane or tone | 25 |
| Prefix with plane or space | 26 |
| Prefix with plane or sol | 24 |
| Prefix with plane or gram | 25 |
| Prefix with plane or dynamics | 29 |
| Prefix with planar or polar | 27 |
| Prefix with place or print | 26 |
| Prefix with place or grace | 26 |
| Prefix with physiology | 22 |
| Prefix with physics or thesis | 29 |
| Prefix with photo or type | 25 |
| Prefix with photo or phone | 26 |
| Prefix with phone or watt | 25 |
| Prefix with phone or vision | 27 |
| Prefix with phone or gram | 25 |
| Prefix with phone or cycle | 26 |
| Prefix with phone and ton | 25 |
| Prefix with phone and cycle | 27 |
| Prefix with phobia or yoga | 26 |
| Prefix with phobia or bat | 25 |
| Prefix with phile or stat | 25 |
| Prefix with phenetidin | 22 |
| Prefix with pets or soul | 24 |
| Prefix with pet or phyte | 24 |
| Prefix with penultimate | 23 |
| Prefix with pedic or dontic | 27 |
| Prefix with pay or plan | 23 |
| Prefix with pad or taxi | 23 |
| Prefix with pad or port | 23 |
| Prefix with owned or occupied | 29 |
| Prefix with ophthalmology | 25 |
| Prefix with ode or pod | 22 |
| Prefix with nuke or freeze | 26 |
| Prefix with nucleotide | 22 |
| Prefix with nuclear or freeze | 29 |
| Prefix with night or light | 26 |