| tumultuous(adjective, chaotic) | |
| undefinable | |
| uneven(adjective, chaotic) | |
| unformed(adjective, disorder, confusion, mess, muddle) | |
| unmeasured | |
| unrecognizable | |
| unsteady(adjective, flexible, adaptable) | |
| unstructured(adjective, disorder, confusion, mess, muddle) | |
| veiled | |
| abstruse(adjective, uncertain, doubtful, vague, intellectual) | |
| aleatory | |
| ambivalent(adjective, open, doubtful, vague, hesitant) | |
| anarchistic(adjective, chaotic) | |
| approximate(vague, imprecise, indeterminate, unspecific, undefined) | |
| arguable | |
| blobby(rough, disorganized, unformed, amorphous, shapeless) | |
| chancy(doubtful, shaky, vague, unsure, unlikely) | |
| clouded(adjective, dull, obscure, dim, shaky) | |
| conjectural(adjective, doubtful, unsettled, vague, questionable) | |
| dateless(lasting, permanent, everlasting, unending, undying) |
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| APA | Smart Define. (2015). indefinite thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/indefinite/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "indefinite thesaurus" https://smartdefine.org/indefinite/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, indefinite thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/indefinite/thesaurus/synonyms>. |
| MLA | Smart Define. "indefinite thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/indefinite/thesaurus/synonyms> |