| FAST | (of surfaces) conducive to rapid speeds |
|---|---|
| FAST | quickly or rapidly (often used as a combining form) |
| FAST | firmly or tightly |
| FAST | sleeping deeply |
| FAST | a day designated for fasting |
| FAST | dye with fast colors |
| FAST | inexpensive food (hamburgers or chicken or milkshakes) prepared and served quickly |
| FAST | the traffic lane for vehicles that are moving rapidly |
| FAST | (Judaism) a Jewish fast day commemorating the destruction of the temples in Jerusalem |
| FAST | (Judaism) a Jewish fast day commemorating the destruction of the temples in Jerusalem |
| FAST | a cunning or deceitful action or device |
| FAST | nuclear reactor in which nuclear fissions are caused by fast neutrons because little or no moderator is used |