Firstborn and Older

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Firstborn adjective - First in order of birth.

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Older and firstborn are semantically related. in born earlier topic. In some cases you can use "Older" instead an adjective "Firstborn".

Older adjective - Being of advanced years and especially past middle age.

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Firstborn and older are semantically related. You can use "Firstborn" instead an adjective "Older".

In older legends, it was explicitly stated that only the firstborn "counts", but the socioeconomic systems that fostered that kind of thinking withered away, leaving only this trope.

Source: Single Line of Descent
The problem was complicated by a popular belief that of twins, the firstborn was the younger, and the second the older — the birth order showed the order they were conceived in.

Source: Succession Crisis

Cite this Source

Older and Firstborn. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/firstborn/older

Firstborn & Older. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/firstborn/older>.

Older or Firstborn. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/firstborn/older.

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