| Prefix for a cab collector | 26 |
| Prefix for a continent | 22 |
| Prefix for a lifesaving "Pen" | 39 |
| Prefix for a metal | 18 |
| Prefix for a millionth | 22 |
| Prefix for a parent | 19 |
| Prefix for a poison | 19 |
| Prefix for a revived genre | 26 |
| Prefix for a subcontinent | 25 |
| Prefix for a switch-hitter | 26 |
| Prefix for about or after | 25 |
| Prefix for acetylene | 20 |
| Prefix for acid or corn | 23 |
| Prefix for act or play | 22 |
| Prefix for active | 17 |
| Prefix for adroit | 17 |
| Prefix for adventure | 20 |
| Prefix for age or angle | 23 |
| Prefix for aircraft and trust | 29 |
| Prefix for all embracing | 24 |
| Prefix for an artery | 20 |
| Prefix for an Asian land | 24 |
| Prefix for an Asian nation | 26 |
| Prefix for an automaton | 23 |
| Prefix for an ear doctor | 24 |
| Prefix for an element | 21 |
| Prefix for angel or duke | 24 |
| Prefix for angel or fiend | 25 |
| Prefix for angle | 16 |
| Prefix for angle and color | 26 |
| Prefix for angle and pod | 24 |
| Prefix for angle or color | 25 |
| Prefix for angle or corn | 24 |
| Prefix for angle or cycle | 25 |
| Prefix for angle or lateral | 27 |
| Prefix for angle or pod | 23 |
| Prefix for angular | 18 |
| Prefix for appropriation | 24 |
| Prefix for arch or lineal | 25 |
| Prefix for arctic | 17 |
| Prefix for arctic or eater | 26 |
| Prefix for Arthur or Donald | 27 |
| Prefix for Asia | 15 |
| Prefix for Asian | 16 |
| Prefix for Asian land | 21 |
| Prefix for athlete | 18 |
| Prefix for atmosphere | 21 |
| Prefix for automatic | 20 |
| Prefix for ballistic | 20 |
| Prefix for band or dict | 23 |
| Prefix for bar | 14 |
| Prefix for bar or gram | 22 |
| Prefix for bar or therm | 23 |
| Prefix for barbital | 19 |
| Prefix for bat or nym | 21 |
| Prefix for bat or phobia | 24 |
| Prefix for bellum | 17 |
| Prefix for bellum or date | 25 |
| Prefix for biology | 18 |
| Prefix for blast or carp | 24 |
| Prefix for blended families | 27 |
| Prefix for bodies | 17 |
| Prefix for body | 15 |
| Prefix for body or tank | 23 |
| Prefix for body or type | 23 |
| Prefix for both | 15 |
| Prefix for brewery | 18 |
| Prefix for buck | 15 |
| Prefix for bucks | 16 |
| Prefix for bus | 14 |
| Prefix for bus or potent | 24 |
| Prefix for bus or present | 25 |
| Prefix for bus or science | 25 |
| Prefix for bus or skirt | 23 |
| Prefix for business or culture | 30 |
| Prefix for byte | 15 |
| Prefix for byte meaning "one billion" | 47 |
| Prefix for call or cop | 22 |
| Prefix for calling | 18 |
| Prefix for camp or van | 22 |
| Prefix for Caps or Cat | 22 |
| Prefix for carbon or scope | 26 |
| Prefix for care | 15 |
| Prefix for carp or crine | 24 |
| Prefix for cast | 15 |
| Prefix for cast or head | 23 |
| Prefix for caust | 16 |
| Prefix for cease or charge | 26 |
| Prefix for cede | 15 |
| Prefix for cent or adventure | 28 |
| Prefix for centennial | 21 |
| Prefix for center | 17 |
| Prefix for center or gram | 25 |
| Prefix for center or graph | 26 |
| Prefix for center or log | 24 |
| Prefix for Centre or gram | 25 |
| Prefix for centric | 18 |
| Prefix for chamber | 18 |
| Prefix for change | 17 |
| Prefix for charge | 17 |