| unable(adjective, inadequate, limited, feeble, useless) |
| unavailable(adjective, inadequate, limited, feeble, useless) |
| unfruitful(adjective, inadequate, limited, feeble, useless) |
| unproductive(adjective, inadequate, limited, feeble, useless) |
| unprofitable(adjective, inadequate, limited, feeble, useless) |
| unsuccess |
| unsuccessfulness |
| uselessness |
| void(adjective, inadequate, limited, feeble, useless) |
| withered(adjective, inadequate, limited, feeble, useless) |
| worthless(adjective, inadequate, limited, feeble, useless) |
| abortion |
| abstract(adjective, wild, unreasonable, useless, absurd) |
| absurd(adjective, unreasonable, useless, unrealistic, unpractical) |
| abutting(unfriendly, obstructive, unaccommodating) |
| against the grain(expression, idiom, unfriendly, obstructive, unaccommodating) |
| at cross-purposes(expression, unfriendly, obstructive, unaccommodating) |
| at odds(expression, unfriendly, contrary, inconsistent, obstructive) |
| attempt |
| bollixed |