- Definitions|2
- Thesaurus|1.9k
- Abbreviations|0
| blurred(adjective, weak, pale, faded) | |
| imponderable(adjective, hard, knowledge, faint) | |
| incomprehensible | |
| trivial(adjective, hard, faint, littleness) | |
| undetectable(adjective, hard, faint, subtle, unremarkable) | |
| unrelatable | |
| dull(adjective, weak, soft, gentle, low) | |
| ephemeral(adjective, hard, faint, subtle, unremarkable) | |
| fine(adjective, hard, slight, thin, faint) | |
| hazy(adjective, weak, pale, faded) | |
| low(adjective, calm, dull, quiet, weak) | |
| minuscule(adjective, soft, gentle, minute, tiny) | |
| pale(adjective, dull, weak, soft, gentle) | |
| shadowy(adjective, hard, weak, faint, pale) | |
| tenuous(weak, slight, fine, thin, pale) | |
| unhearable(adjective, quiet, soft, low) | |
| atomic | |
| blurry | |
| corpuscular | |
| covert(adjective, invisible) |
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| APA | Smart Define. (2015). imperceptible thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/imperceptible/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "imperceptible thesaurus" https://smartdefine.org/imperceptible/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, imperceptible thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/imperceptible/thesaurus/synonyms>. |
| MLA | Smart Define. "imperceptible thesaurus" 13 April 2015. Web. 27 September 2026. <https://smartdefine.org/imperceptible/thesaurus/synonyms> |