| hassle(noun, worry, situation, irritation) |
| free(adjective, characteristic, state, freedom) |
| attribute(noun, state, condition, relation) |
| bother(noun, worry, situation, irritation) |
| characteristic(noun, state, condition, relation) |
| difficulty(noun, worry, situation, irritation) |
| factor(noun, state, condition, relation) |
| feature(noun, state, condition, relation) |
| hallmark(noun, state, condition, relation) |
| inconvenience(noun, worry, situation, irritation) |
| mark(noun, state, condition, relation) |
| nuisance(noun, worry, situation, irritation) |
| problem(noun, worry, situation, irritation) |
| property(noun, state, condition, relation) |
| trait(noun, state, condition, relation) |
| usability(noun, action, operation, usage) |
| unimpeded(adjective, characteristic, state, freedom) |
| unobstructed(adjective, characteristic, state, freedom) |
| unrestricted(adjective, characteristic, state, freedom) |
| way(noun, business, effect, attribute) |