| mind-altering(adjective, characteristic, emotions, sensations) |
| psychedelic(adjective, characteristic, emotions, sensations) |
| staggering(adjective, characteristic, emotions, sensations) |
| dreadful(adjective, awful, terrible, fear, horrible) |
| horrifying(verb, adjective, awful, wonderful, foul) |
| terrifying(verb, adjective, awful, shocking, dangerous) |
| appalling(adjective, awful, frightful) |
| awful(adjective, bad, awful, terrible, fear) |
| dire(adjective, awful, terrible, fear, shocking) |
| terrible(adjective, bad, awful, heavy, fear) |
| frightful(adjective, unpleasant, awful, terrible, foul) |
| horrible(adjective, awful, terrible, fear, foul) |
| dismaying(verb, adjective, hard, severe, offensive) |
| disturbing(verb, adjective, hard, severe, upsetting) |
| formidable(adjective, bad, awful, heavy, fear) |
| threatening(verb, adjective, bad, warning, danger) |
| daunting(adjective, awful, terrible, wonderful, disgusting) |
| dread(adjective, fear, horrible, shocking, upsetting) |
| ghastly(adjective, awful, fear) |
| unnerving(verb, adjective, awful, terrible, disgusting) |