| Similarity | Rank | |
|---|---|---|
| suppressant | 0.809 | 63372 |
| caffeine | 0.806 | 19664 |
| depressant | 0.780 | 82785 |
| antihistamine | 0.779 | 51844 |
| barbiturate | 0.775 | 34844 |
| pain-killing | 0.774 | 64935 |
| pain-killer | 0.771 | 42554 |
| flatulence | 0.770 | 39560 |
| analgesic | 0.768 | 24504 |
| endorphin | 0.767 | 46912 |
| morphine | 0.761 | 18319 |
| hallucinogen | 0.759 | 59310 |
| diuretic | 0.759 | 22802 |
| relaxant | 0.758 | 59918 |
| tranquillizer | 0.756 | 22516 |
| cross-addictive | 0.755 | 66394 |
| naltrexone | 0.754 | 99591 |
| diamorphine | 0.754 | 73537 |
| sedative | 0.754 | 22484 |
| pethidine | 0.750 | 38241 |
| mood-altering | 0.745 | 34314 |
| allergen | 0.744 | 44917 |
| intoxicant | 0.743 | 67752 |
| anti-inflammatory | 0.741 | 28585 |
| stimulator | 0.741 | 58416 |