| Prefix with array or robe | 25 |
| Prefix with athlete or angle | 28 |
| Prefix with athlete or atomic | 29 |
| Prefix with athlete or state | 28 |
| Prefix with Atlantic or act | 27 |
| Prefix with axial or angle | 26 |
| Prefix with band or diction | 27 |
| Prefix with bank or dollar | 26 |
| Prefix with Baptist or basis | 28 |
| Prefix with bar or bath | 23 |
| Prefix with bar or gloss | 24 |
| Prefix with bar or gram | 23 |
| Prefix with bar or graph | 24 |
| Prefix with bar or lateral | 26 |
| Prefix with bar or pod | 22 |
| Prefix with bar or therm | 24 |
| Prefix with bar or tope | 23 |
| Prefix with bat or phobia | 25 |
| Prefix with bel or meter | 24 |
| Prefix with blast or carp | 25 |
| Prefix with blast or path | 25 |
| Prefix with body or dote | 24 |
| Prefix with bond or dollar | 26 |
| Prefix with bond or market | 26 |
| Prefix with botany or history | 29 |
| Prefix with braten or kraut | 27 |
| Prefix with bucks or bytes | 26 |
| Prefix with bucks or phone | 26 |
| Prefix with buoy or gram | 24 |
| Prefix with bus and present | 27 |
| Prefix with bus or potent | 25 |
| Prefix with bus or present | 26 |
| Prefix with bus or science | 26 |
| Prefix with bus or series | 25 |
| Prefix with byte or buck | 24 |
| Prefix with byte or bucks | 25 |
| Prefix with byte or watt | 24 |
| Prefix with bytes or bucks | 26 |
| Prefix with cab or cure | 23 |
| Prefix with call or cop | 23 |
| Prefix with calyx or thalamus | 29 |
| Prefix with car or law | 22 |
| Prefix with car or tour | 23 |
| Prefix with car or warrior | 26 |
| Prefix with cardiography | 24 |
| Prefix with carp or biology | 27 |
| Prefix with carpal or tarsal | 28 |
| Prefix with cast or type | 24 |
| Prefix with cast or vise | 24 |
| Prefix with catastrophe | 23 |
| Prefix with cede or change | 26 |
| Prefix with cede or date | 24 |
| Prefix with cede or flex | 24 |
| Prefix with cellular or body | 28 |
| Prefix with centennial | 22 |
| Prefix with center or cycle | 27 |
| Prefix with center or dermal | 28 |
| Prefix with center or dermis | 28 |
| Prefix with center or gram | 26 |
| Prefix with center or lady? | 27 |
| Prefix with center or pen | 25 |
| Prefix with centricity | 22 |
| Prefix with century names | 25 |
| Prefix with chamber or bellum | 29 |
| Prefix with chamber or chapel | 29 |
| Prefix with chamber or room | 27 |
| Prefix with chance or hap | 25 |
| Prefix with change or act | 25 |
| Prefix with change or state | 27 |
| Prefix with chord or color | 26 |
| Prefix with chord or corn | 25 |
| Prefix with chord or meter | 26 |
| Prefix with christ or pope | 26 |
| Prefix with chronometry | 23 |
| Prefix with chute or graph | 26 |
| Prefix with chute or troop | 26 |
| Prefix with circle or colon | 27 |
| Prefix with classic or Gothic | 29 |
| Prefix with classic or Latin | 28 |
| Prefix with classic or mycin | 28 |
| Prefix with classic or natal | 28 |
| Prefix with classicism | 22 |
| Prefix with coastal or mural | 28 |
| Prefix with colon or formal | 27 |
| Prefix with colonialism | 23 |
| Prefix with color or chord | 26 |
| Prefix with color or corn | 25 |
| Prefix with color or cycle | 26 |
| Prefix with color or tone | 25 |
| Prefix with com or change | 25 |
| Prefix with con or classical | 28 |
| Prefix with con or cortex | 25 |
| Prefix with conference | 22 |
| Prefix with conferencing | 24 |
| Prefix with conformist | 22 |
| Prefix with conservative | 24 |
| Prefix with continental | 23 |
| Prefix with cook or heat | 24 |
| Prefix with cool or cook | 24 |
| Prefix with corn and form | 25 |