| observable(adjective, clear, knowledge, sensitive, substantial) |
| perceivable(adjective, visual, clear, see, knowledge) |
| perceptible(adjective, visual, clear, sound, see) |
| visible(adjective, visual, clear, see, substantial) |
| clear(adjective, visual, sound, plain, physical) |
| evident(adjective, clear, substantial, obvious, visible) |
| noticeable(adjective, clear, knowledge, distinct, obvious) |
| obvious(adjective, clear, substantial, distinct, visible) |
| apparent(adjective, clear, substantial, distinct, obvious) |
| detectable(adjective, clear, knowledge, distinct, loud) |
| plain(adjective, visual, clear, sound, physical) |
| palpable(adjective, clear, knowledge, sensitive, distinct) |
| manifest(adjective, clear, substantial, obvious, visible) |
| recognizable(adjective, clear, significant, sensitive, substantial) |
| conspicuous(adjective, clear, plain, obvious, visible) |
| distinguishable(adjective, clear, knowledge, distinct, obvious) |
| distinct(adjective, visual, clear, sound, plain) |
| tangible(adjective, sensitive, substantial, real, distinct) |
| unmistakable |
| patent(noun, adjective, clear, sensitive, obvious) |