| Economise | Waste |
| Employer | Employee |
| Feeble | Sturdy, Strong |
| Freedom | Captivity |
| Frequent | Seldom |
| Found | Lost |
| Fresh | Stale |
| Frank | Secretive |
| Generous | Mean |
| Gentle | Rough |
| Gather | Distribute |
| Giant | Dwarf |
| Granted | Refused |
| Guilty | Innocent |
| Hasten | Dawdle | |
| Horizontal | Vertical | |
| Hinder | Aid, Help | |
| Humble | Proud | |
| Imitation | Genuine | |
| Immense | Tiny, Minute | |
| Intentional | Accidental |
