| Prefix with dermis | 18 |
| Prefix with dermis or glottis | 29 |
| Prefix with desert or darkness | 30 |
| Prefix with design | 18 |
| Prefix with determined | 22 |
| Prefix with dexterity | 21 |
| Prefix with dexterous | 21 |
| Prefix with dextrous | 20 |
| Prefix with diagnosis or logic | 30 |
| Prefix with diametric | 21 |
| Prefix with diction | 19 |
| Prefix with dimensional | 23 |
| Prefix with directional | 23 |
| Prefix with directional or cycle | 32 |
| Prefix with directional or lateral | 34 |
| Prefix with disestablishmentarianism | 36 |
| Prefix with Disney | 18 |
| Prefix with Disney or dollar | 28 |
| Prefix with distant | 19 |
| Prefix with distant or lateral | 30 |
| Prefix with diversity | 21 |
| Prefix with dollar | 18 |
| Prefix with dollar or chemical | 30 |
| Prefix with dollar or trash | 27 |
| Prefix with dollars | 19 |
| Prefix with dose | 16 |
| Prefix with dose or ton | 23 |
| Prefix with dot | 15 |
| Prefix with doxy | 16 |
| Prefix with drama | 17 |
| Prefix with dramatic | 20 |
| Prefix with drome | 17 |
| Prefix with drome and thesis | 28 |
| Prefix with drome or dynamics | 29 |
| Prefix with drome or space | 26 |
| Prefix with duct | 16 |
| Prefix with duct or form | 24 |
| Prefix with duct or raptor | 26 |
| Prefix with duct or sac | 23 |
| Prefix with duke or deacon | 26 |
| Prefix with dynamic | 19 |
| Prefix with dynamic and space | 29 |
| Prefix with dynamic or braking | 30 |
| Prefix with dynamic or space | 28 |
| Prefix with dynamics | 20 |
| Prefix with dynamics or nuclear | 31 |
| Prefix with dynamics or sol | 27 |
| Prefix with dyne or sol | 23 |
| Prefix with dyne or stat | 24 |
| Prefix with East | 16 |
| Prefix with east or west | 24 |
| Prefix with economic | 20 |
| Prefix with economics | 21 |
| Prefix with efficiency | 22 |
| Prefix with ego or hero | 23 |
| Prefix with eminent | 19 |
| Prefix with engine | 18 |
| Prefix with engineering | 23 |
| Prefix with epinephrine | 23 |
| Prefix with ethnic | 18 |
| Prefix with European | 20 |
| Prefix with European or China | 29 |
| Prefix with European or Chinese | 31 |
| Prefix with expressionism | 25 |
| Prefix with face or faith | 25 |
| Prefix with facsimile | 21 |
| Prefix with factor | 18 |
| Prefix with fall | 16 |
| Prefix with family or room | 26 |
| Prefix with fan or jet | 22 |
| Prefix with fascism | 19 |
| Prefix with fat or fix | 22 |
| Prefix with fauna | 17 |
| Prefix with feminist and freak | 30 |
| Prefix with fiction | 19 |
| Prefix with figure or form | 26 |
| Prefix with film or scope | 25 |
| Prefix with final or trailer | 28 |
| Prefix with finalist | 20 |
| Prefix with finals | 18 |
| Prefix with financing or economics | 34 |
| Prefix with fire | 16 |
| Prefix with fire or choir | 25 |
| Prefix with fire or print | 25 |
| Prefix with firm and form | 25 |
| Prefix with fit | 15 |
| Prefix with fix | 15 |
| Prefix with fix or fuse | 23 |
| Prefix with flooey or flop | 26 |
| Prefix with flop | 16 |
| Prefix with flop or plop | 24 |
| Prefix with flow | 16 |
| Prefix with fluid or toxin | 26 |
| Prefix with fluoride | 20 |
| Prefix with foam | 16 |
| Prefix with focal | 17 |
| Prefix with focus | 17 |
| Prefix with foil | 16 |
| Prefix with foil or pan | 23 |
| Prefix with foil or phobia | 26 |