| FAST | abstaining from food |
|---|---|
| FAST | abstain from eating |
| FAST | abstain from certain foods, as for religious or medical reasons |
| FAST | permanently dyed |
| FAST | unwavering in devotion to friend or vow or cause |
| FAST | acting or moving or capable of acting or moving quickly |
| FAST | (music) at a rapid tempo |
| FAST | (used of timepieces) indicating a time ahead of or later than the correct time |
| FAST | securely fixed in place |
| FAST | hurried and brief |
| FAST | unrestrained by convention or morality |
| FAST | firmly fastened or secured against opening |