| fickle(adjective, unreliable, insecure, treacherous, incalculable) |
| dubious(adjective, unreliable, insecure, treacherous, incalculable) |
| accident-sensitive(adjective, unreliable, insecure, treacherous, incalculable) |
| dickey(adjective, unreliable, insecure, treacherous, incalculable) |
| dicky(adjective, unreliable, insecure, treacherous, incalculable) |
| error-prone(adjective, unreliable, insecure, treacherous, incalculable) |
| fair-weather(adjective, unreliable, insecure, treacherous, incalculable) |
| fairweather(adjective, unreliable, insecure, treacherous, incalculable) |
| faithless(adjective, unreliable, insecure, treacherous, incalculable) |
| fallible(adjective, unreliable, insecure, treacherous, incalculable) |
| fast and loose(adjective, unreliable, insecure, treacherous, incalculable) |
| figure |
| figure out |
| fly-by-night(adjective, unreliable, insecure, treacherous, incalculable) |
| fly by night(adjective, unreliable, insecure, treacherous, incalculable) |
| hopeless(adjective, unreliable, insecure, treacherous, incalculable) |
| iffy(adjective, unreliable, insecure, treacherous, incalculable) |
| incalculable(adjective, unreliable, insecure, treacherous) |
| insecure(adjective, unreliable, treacherous, incalculable) |
| irresponsible(adjective, unreliable, insecure, treacherous, incalculable) |