| Prefix with trafficker | 22 |
| Prefix with toxin or skeleton | 29 |
| Prefix with toxicology | 22 |
| Prefix with tourist | 19 |
| Prefix with tourism or terrorism | 32 |
| Prefix with tourism | 19 |
| Prefix with tour or type | 24 |
| Prefix with tour | 16 |
| Prefix with tope or type | 24 |
| Prefix with tonic | 17 |
| Prefix with tone | 16 |
| Prefix with ton or phone | 24 |
| Prefix with ton or cycle | 24 |
| Prefix with ton | 15 |
| Prefix with tome | 16 |
| Prefix with tiller or rooter | 28 |
| Prefix with tiller | 18 |
| Prefix with Tibetan | 19 |
| Prefix with thon or vision | 26 |
| Prefix with thesis or chronic | 29 |
| Prefix with thesis | 18 |
| Prefix with thermal or strategic | 32 |
| Prefix with thermal or skeleton | 31 |
| Prefix with thermal or bar | 26 |
| Prefix with thermal | 19 |
| Prefix with therm or bar | 24 |
| Prefix with therm | 17 |
| Prefix with therapy | 19 |
| Prefix with tetracycline | 24 |
| Prefix with test | 16 |
| Prefix with terrorist | 21 |
| Prefix with terrorism | 21 |
| Prefix with term or way | 23 |
| Prefix with term or town | 24 |
| Prefix with term or life | 24 |
| Prefix with teen | 16 |
| Prefix with technology | 22 |
| Prefix with technics | 20 |
| Prefix with tax | 15 |
| Prefix with tasse | 17 |
| Prefix with task or grain | 25 |
| Prefix with task | 16 |
| Prefix with tarsal | 18 |
| Prefix with tard or form | 24 |
| Prefix with tape or type | 24 |
| Prefix with tank or trust | 25 |
| Prefix with tank | 16 |
| Prefix with system or sphere | 28 |
| Prefix with system | 18 |
| Prefix with syllable or graph | 29 |
| Prefix with syllabic | 20 |
| Prefix with sweet | 17 |
| Prefix with surgery or transmitter | 34 |
| Prefix with surgery | 19 |
| Prefix with surgeon | 19 |
| Prefix with suppressive | 23 |
| Prefix with suppose and signify | 31 |
| Prefix with suppose | 19 |
| Prefix with summer and winter | 29 |
| Prefix with suggestion | 22 |
| Prefix with suction | 19 |
| Prefix with style or spore | 26 |
| Prefix with structure | 21 |
| Prefix with structural | 22 |
| Prefix with store | 17 |
| Prefix with stop or stick | 25 |
| Prefix with stick or violent | 28 |
| Prefix with stick or stop | 25 |
| Prefix with stellar | 19 |
| Prefix with static | 18 |
| Prefix with state or tone | 25 |
| Prefix with state or sect | 25 |
| Prefix with state or pod | 24 |
| Prefix with state or glycerides | 31 |
| Prefix with state or county | 27 |
| Prefix with state or change | 27 |
| Prefix with state or angle | 26 |
| Prefix with state or act | 24 |
| Prefix with state | 17 |
| Prefix with stat | 16 |
| Prefix with stasis | 18 |
| Prefix with starter | 19 |
| Prefix with star or bucks | 25 |
| Prefix with STANdard | 20 |
| Prefix with spore or sphere | 27 |
| Prefix with spore | 17 |
| Prefix with spherical | 21 |
| Prefix with sphere or system | 28 |
| Prefix with sphere or stich | 27 |
| Prefix with sphere or spore | 27 |
| Prefix with sphere or skeleton | 30 |
| Prefix with sphere or lateral | 29 |
| Prefix with sphere or disaster | 30 |
| Prefix with sphere and tourism | 30 |
| Prefix with sphere and politics | 31 |
| Prefix with sphere | 18 |
| Prefix with species | 19 |
| Prefix with speak that's, like, totally tubular | 51 |
| Prefix with space or stat | 25 |
| Prefix with space or naut | 25 |