Major
Major adjective - Having great meaning or lasting effect.
Usage example: a major change in how science is taught in our high schools
Serious is a synonym for major in important topic. In some cases you can use "Serious" instead an adjective "Major", when it comes to topics like complicated, portentous, momentous. popular alternative
Serious
Serious adjective - Having a matter of importance as its topic.
Usage example: a very serious film that dealt with the aftermath of the Gulf War
Major is a synonym for serious in portentous topic. You can use "Major" instead an adjective "Serious", if it concerns topics such as important, crucial. popular alternative
Nearby Words: seriously, seriousness
Mutual synonyms
Both words in one sentence
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A much more major and serious one occurs in the episode "The Butterscotch Effect" when they alter the day that Barry didn't get to meet his hero.
Source: Series / Best Friends Whenever -
Similar to how many fans of microbrews feel that major brands like Budweiser are A Tankard of Moose Urine, serious coffee afficionados have the same disdain toward major coffee brands like Starbucks, Folgers and Maxwell House.
Source: Bad to the Last Drop - Many of the conventions and customs of the church wedding are rooted in serious historical business, arising from the often violent politics of the major families in medieval Italy.
Source: Serious Business / Real Life
Cite this Source
Serious and Major. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/major/serious
Major & Serious. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/major/serious>.
Serious or Major. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/major/serious.
Google Ngram Viewer shows how "major" and "serious" have occurred on timeline