Important
Leading
Leading adjective - Coming before all others in importance.
Usage example: they are the leading suppliers of processed meat in the country
Important is a synonym for leading in characteristic topic. Sometimes you can use "Important" instead an adjective "Leading".
Mutual synonyms
Both words in one sentence
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Small Role, Big Impact: Though he only appears for about five minutes, Ulysses Klaue ends up leading Ultron to his Vibranium stash — which becomes hugely important to the second half of the story.
Source: Film / Avengers: Age of Ultron -
This becomes important later on: as Iofur becomes more and more human, he starts to lose his ability, leading to his defeat by Iorek.
Source: Living Lie Detector -
Fortunately, he remains an important NPC who survives all the way to the end of the game while leading the anti-Reaper resistance on Earth.
Source: Guest Star Party Member
Cite this Source
Leading and Important. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/important/leading
Important & Leading. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/important/leading>.
Leading or Important. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/important/leading.
Google Ngram Viewer shows how "important" and "leading" have occurred on timeline