Reserved
Reserved adjective - Tending not to speak frequently (as by habit or inclination).
Significant and reserved are semantically related. In some cases you can use "Significant" instead an adjective "Reserved".
Significant
Significant adjective - Clearly conveying a special meaning (as one's mood).
Reserved and significant are semantically related. Sometimes you can use "Reserved" instead an adjective "Significant".
Both words in one sentence
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As transplanting traditional gender roles into same-sex couples is popular in fiction, the character who could be considered "dominant" (often more serious or reserved) in the relationship is often similarly taller than their significant other.
Source: One Head Taller - Pokémon Black and White introduces a seemingly random (though rather strange) Trainer who challenges you to a Pokemon battle... and gets an animated sprite, an honour reserved for significant characters only.
Source: Interface Spoiler
Cite this Source
Significant and Reserved. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/reserved/significant
Reserved & Significant. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/reserved/significant>.
Significant or Reserved. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/reserved/significant.
Google Ngram Viewer shows how "reserved" and "significant" have occurred on timeline