Taboo
Taboo adjective - That may not be permitted.
Unthinkable and taboo are semantically related. in permitted topic. In some cases you can use "Unthinkable" instead an adjective "Taboo".
Unthinkable
Unthinkable adjective - Too extraordinary or improbable to believe.
Taboo and unthinkable are semantically related. Sometimes you can replace term "Taboo" with "Unthinkable", this adjectives are similar.
Nearby Word: unthinking
Mutual synonyms
Both words in one sentence
- During the Horus Heresy series it is made pretty clear that prior to the Isstvan V Massacre it was considered taboo for Astartes to kill another Astartes, verging on the unthinkable.
Source: Ape Shall Never Kill Ape - Elf/dragon hybrids, although perfectly feasible (with shapechanging assistance) under 3E rules, are such an unthinkable taboo to both species in the Eberron setting that producing one got the Death-dragonmarked elven lineage of Vol exterminated.
Cite this Source
Unthinkable and Taboo. (2016). Retrieved 2026, July 29, from https://thesaurus.plus/related/taboo/unthinkable
Taboo & Unthinkable. N.p., 2016. Web. 29 Jul. 2026. <https://thesaurus.plus/related/taboo/unthinkable>.
Unthinkable or Taboo. 2016. Accessed July 29, 2026. https://thesaurus.plus/related/taboo/unthinkable.
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