| Prefix for fats and plants | 26 |
| Prefix for fauna or culture | 27 |
| Prefix for field or stream | 26 |
| Prefix for fiend or angel | 25 |
| Prefix for fire or rocket | 25 |
| Prefix for foil or chloride | 27 |
| Prefix for fold or graph | 24 |
| Prefix for form or corn | 23 |
| Prefix for form or cycle | 24 |
| Prefix for form or sex | 22 |
| Prefix for form or verse | 24 |
| Prefix for geek or mensch | 25 |
| Prefix for giving or taking | 27 |
| Prefix for globin or stat | 25 |
| Prefix for god or john | 22 |
| Prefix for god or monde | 23 |
| Prefix for gothic or classic | 28 |
| Prefix for grade or active | 26 |
| Prefix for graduate or handed | 29 |
| Prefix for gram and bar | 23 |
| Prefix for gram and cure | 24 |
| Prefix for gram and phone | 25 |
| Prefix for gram or drome | 24 |
| Prefix for gram or dyne | 23 |
| Prefix for gram or glotis | 25 |
| Prefix for gram or logical | 26 |
| Prefix for gram or logue | 24 |
| Prefix for gram or lytic | 24 |
| Prefix for gram or meter | 24 |
| Prefix for gram or naut | 23 |
| Prefix for gram or nautical | 27 |
| Prefix for gram or pest | 23 |
| Prefix for gram or tone | 23 |
| Prefix for gram or vision | 25 |
| Prefix for graph or harp | 24 |
| Prefix for graph or logical | 27 |
| Prefix for graph or medic | 25 |
| Prefix for graph or resin | 25 |
| Prefix for graph or trooper | 27 |
| Prefix for graph or type | 24 |
| Prefix for graph or vision | 26 |
| Prefix for hap or deed | 22 |
| Prefix for head or lap | 22 |
| Prefix for hero or knock | 24 |
| Prefix for hit or dose | 22 |
| Prefix for hood or handle | 25 |
| Prefix for Impressionism | 24 |
| Prefix for inflammatory | 23 |
| Prefix for john or god | 22 |
| Prefix for lateral or distant | 29 |
| Prefix for lateral or librium | 29 |
| Prefix for lay or play | 22 |
| Prefix for legal or chute | 25 |
| Prefix for legal or medic | 25 |
| Prefix for legal or normal | 26 |
| Prefix for legal or sailing | 27 |
| Prefix for life or wife | 23 |
| Prefix for light or night | 25 |
| Prefix for lithic or plastic | 28 |
| Prefix for lock or view | 23 |
| Prefix for log or gram | 22 |
| Prefix for logic or centric | 27 |
| Prefix for logical or gram | 26 |
| Prefix for logical or motor | 27 |
| Prefix for logy and nomics | 26 |
| Prefix for logy or nomy | 23 |
| Prefix for mate or mobile | 25 |
| Prefix for mature or dominant | 29 |
| Prefix for medic or graph | 25 |
| Prefix for meter or gram | 24 |
| Prefix for meter or liter | 25 |
| Prefix for meter or pede | 24 |
| Prefix for meter or scope | 25 |
| Prefix for meter or spore | 25 |
| Prefix for meter or tribe | 25 |
| Prefix for meter or tude | 24 |
| Prefix for meter or winkle | 26 |
| Prefix for metric and tope | 26 |
| Prefix for metric or tonic | 26 |
| Prefix for mobile or pilot | 26 |
| Prefix for mode or king | 23 |
| Prefix for morph or plasm | 25 |
| Prefix for morph or skeletal | 28 |
| Prefix for motor or control | 27 |
| Prefix for mural or state | 25 |
| Prefix for mural or venous | 26 |
| Prefix for name or real | 23 |
| Prefix for naut or gram | 23 |
| Prefix for net or state | 23 |
| Prefix for night or day | 23 |
| Prefix for nomy or logy | 23 |
| Prefix for Norman or Saxon | 26 |
| Prefix for pad or port | 22 |
| Prefix for pede or grade | 24 |
| Prefix for penultimate | 22 |
| Prefix for phobia or bat | 24 |
| Prefix for phone or bucks | 25 |
| Prefix for phone or cycle | 25 |
| Prefix for phone or post | 24 |
| Prefix for phone or ton | 23 |