| A | B |
| forearm | part of the arm from the wrist to the elbow |
| forebear | ancestor; forefather |
| foreboding | feeling beforehand of coming trouble;omen |
| forecast | prediction; prophecy |
| forefront | foremost part or place; vanguard |
| foregoing | going before; previous |
| foremost | standing at the front; first |
| foreshadow | indicate beforehand; augur; portend |
| foresight | act of looking forward; prudence |
| foreword | preface; front matter preceding the text of a book |