| Prefix with present or potent | 29 |
| Prefix with pressure or point | 29 |
| Prefix with print or trust | 26 |
| Prefix with professional | 24 |
| Prefix with proliferation | 25 |
| Prefix with prove or solve | 26 |
| Prefix with quark or shark | 26 |
| Prefix with rail and gram | 25 |
| Prefix with rail or theist | 26 |
| Prefix with rail or tone | 24 |
| Prefix with Raphaelite | 22 |
| Prefix with red or structure | 28 |
| Prefix with revisionist | 23 |
| Prefix with ribonucleic | 23 |
| Prefix with right or reader | 27 |
| Prefix with rocket or fit | 25 |
| Prefix with room or date | 24 |
| Prefix with sac or duct | 23 |
| Prefix with saccharides | 23 |
| Prefix with school or season | 28 |
| Prefix with school or war | 25 |
| Prefix with scient or potent | 28 |
| Prefix with scope or logical | 28 |
| Prefix with scope or meter | 26 |
| Prefix with scope or phone | 26 |
| Prefix with scope or photo | 26 |
| Prefix with scope or skeleton | 29 |
| Prefix with scope or style | 26 |
| Prefix with sect or cycle | 25 |
| Prefix with septic or tank | 26 |
| Prefix with sex or cycle | 24 |
| Prefix with ship or slip | 24 |
| Prefix with sked or skid | 24 |
| Prefix with skeleton or plasm | 29 |
| Prefix with skeleton or spore | 29 |
| Prefix with skiing or sailing | 29 |
| Prefix with skirt or series | 27 |
| Prefix with social or trust | 27 |
| Prefix with soft or sweet | 25 |
| Prefix with sol and stat | 24 |
| Prefix with sol or space | 24 |
| Prefix with sol or stat | 23 |
| Prefix with sonic or violet | 27 |
| Prefix with space or café | 28 |
| Prefix with space or dynamic | 28 |
| Prefix with space or naut | 25 |
| Prefix with space or stat | 25 |
| Prefix with sphere or lateral | 29 |
| Prefix with sphere or spore | 27 |
| Prefix with sphere or stich | 27 |
| Prefix with sphere or system | 28 |
| Prefix with spore or sphere | 27 |
| Prefix with star or bucks | 25 |
| Prefix with state or act | 24 |
| Prefix with state or angle | 26 |
| Prefix with state or change | 27 |
| Prefix with state or county | 27 |
| Prefix with state or pod | 24 |
| Prefix with state or sect | 25 |
| Prefix with state or tone | 25 |
| Prefix with stick or stop | 25 |
| Prefix with stick or violent | 28 |
| Prefix with stop or stick | 25 |
| Prefix with structural | 22 |
| Prefix with style or spore | 26 |
| Prefix with suggestion | 22 |
| Prefix with summer and winter | 29 |
| Prefix with suppressive | 23 |
| Prefix with syllable or graph | 29 |
| Prefix with system or sphere | 28 |
| Prefix with tank or trust | 25 |
| Prefix with tape or type | 24 |
| Prefix with tard or form | 24 |
| Prefix with task or grain | 25 |
| Prefix with technology | 22 |
| Prefix with term or life | 24 |
| Prefix with term or town | 24 |
| Prefix with term or way | 23 |
| Prefix with tetracycline | 24 |
| Prefix with therm or bar | 24 |
| Prefix with thermal or bar | 26 |
| Prefix with thesis or chronic | 29 |
| Prefix with thon or vision | 26 |
| Prefix with tiller or rooter | 28 |
| Prefix with ton or cycle | 24 |
| Prefix with ton or phone | 24 |
| Prefix with tope or type | 24 |
| Prefix with tour or type | 24 |
| Prefix with toxicology | 22 |
| Prefix with toxin or skeleton | 29 |
| Prefix with trafficker | 22 |
| Prefix with trafficking | 23 |
| Prefix with transmission | 24 |
| Prefix with transmitter | 23 |
| Prefix with trash and Disney | 28 |
| Prefix with treat or use | 24 |
| Prefix with triple digits | 25 |
| Prefix with trust and rust | 26 |
| Prefix with trust or social | 27 |
| Prefix with tubby or market | 27 |