| hazardous(adjective, feature, characteristic, detail, risk) |
| hurtful(adjective, feature, characteristic, detail) |
| imperil(verb, action, risk, venture) |
| insecure(adjective, feature, characteristic, detail, risk) |
| jeopardy(verb, action, risk, venture) |
| operate(verb, character, behavior, manner) |
| parlous(adjective, feature, characteristic, detail, risk) |
| peril(verb, action, risk, venture) |
| poisonous(adjective, feature, characteristic, detail) |
| severe(adjective, feature, characteristic, detail) |
| threaten(verb, action, risk, venture) |
| ticklish(adjective, feature, characteristic, detail) |
| treacherous(adjective, feature, characteristic, detail) |
| uncertain(adjective, feature, characteristic, detail) |
| vulnerable(adjective, feature, characteristic, detail) |
| wager(verb, action, risk, venture) |
| caffeine |
| chancy(adjective, feature, characteristic, detail, risk) |
| critical(adjective, feature, characteristic, detail, risk) |
| damaging(adjective, feature, characteristic, detail) |