erratic 7 Associations

temperamental unreliable (similar term) undependable (similar term)

fallible 8 Associations

errant (similar term) erring (similar term) error-prone (similar term) undependable (similar term) unreliable (similar term) weak (similar term) infallible (antonym)

temperamental 13 Associations

erratic unreliable (similar term) undependable (similar term)

uncertain 9 Associations

unreliable (similar term) undependable (similar term)

unsound 7 Associations

unreliable (similar term) undependable (similar term)