| spasmodic |
| spineless |
| suborned(adjective, dishonest, immoral, rotten, untrustworthy) |
| suss(adjective, unreliable, insecure, treacherous, incalculable) |
| tainted(adjective, dishonest, immoral, rotten, untrustworthy) |
| thoughtless(adjective, careless, wild, rash, heedless) |
| troublesome(adjective, unreliable, insecure, treacherous, incalculable) |
| trustless(adjective, unreliable, insecure, treacherous, incalculable) |
| truthless(adjective, unreliable, insecure, treacherous, incalculable) |
| two-faced(adjective, dishonest, immoral, improper, rotten) |
| unaccountable |
| unassured(adjective, unreliable, insecure, treacherous, incalculable) |
| underhanded(adjective, dishonest, immoral, rotten, untrustworthy) |
| unethical(adjective, dishonest, immoral, rotten, untrustworthy) |
| unfaithful(adjective, dishonest, immoral, improper, rotten) |
| unfixed |
| unpredictable |
| unsafe(adjective, unreliable, insecure, treacherous, incalculable) |
| unscrupulous(adjective, dishonest, immoral, rotten, untrustworthy) |
| unserviceable(adjective, unreliable, insecure, treacherous, incalculable) |