| unpredictable(adjective, uncertain, changeable, risky, erratic) |
| dicey(changeable, risky, erratic, random, hazardous) |
| haphazard(adjective, accidental, chancy) |
| unintentional(adjective, chance, haphazard, unplanned, accidental) |
| variable(adjective, chance, changeable, erratic, random) |
| coincidental(adjective, chance, unintentional, accidental, unintended) |
| fatal(adjective, accidental) |
| felicitous(adjective, good, happy, happiness, joy) |
| hit-or-miss(adjective, random, chancy) |
| risky(adjective, chancy) |
| successful(adjective, good, happy, happiness, joy) |
| as happy as a clam(adjective, good, happy, happiness, joy) |
| blest(adjective, good, happy, happiness, joy) |
| blissful(adjective, good, happy, happiness, joy) |
| blithesome(adjective, good, happy, happiness, joy) |
| capricious(uncertain, unpredictable, changeable, fickle, risky) |
| delighted(adjective, good, happy, happiness, joy) |
| eudemonic(adjective, good, happiness, glad, success) |
| favorable(adjective, good, happy, happiness, joy) |
| felicific(adjective, good, happy, happiness, joy) |