| thought | |
| thunderbolt | |
| ticklish(lively, unpredictable, changeable, indecisive, inconsistent) | |
| tinny | |
| toying | |
| undependable | |
| unfaithful(adjective, changeable, fickle, untrue, untrustworthy) | |
| up-and-down(lively, unpredictable, changeable, temperamental) | |
| versatile | |
| vivacious | |
| weather vane | |
| wheel of fortune(expression, idiom) | |
| whirligig | |
| yo-yo(lively, changeable, fickle, untrue, untrustworthy) | |
| zingy | |
| adulterine(fickle, untrustworthy, unprincipled, dirty-dealing) | |
| adulterous(fickle, untrustworthy, unprincipled, dirty-dealing) | |
| aluminium | |
| aluminum | |
| amoral(fickle, untrustworthy, unprincipled, dirty-dealing) |
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| APA | Smart Define. (2016). quicksilver thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/quicksilver/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "quicksilver thesaurus" https://smartdefine.org/quicksilver/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, quicksilver thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/quicksilver/thesaurus/synonyms>. |
| MLA | Smart Define. "quicksilver thesaurus" 1 April 2016. Web. 23 September 2026. <https://smartdefine.org/quicksilver/thesaurus/synonyms> |