Age
Days
Mutual synonyms
Both words in one sentence
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If so, he will age 30 years in as many days, regaining his sanity at the end of that time.
Source: Rapid Aging - For example, the Marines seem to think of it as an age where pirates are more ruthless than ever, whereas Trafalgar Law thinks of it as an age where the Marines' days are numbered.
Source: End of an Age - A minor character in season seven of Buffy the Vampire Slayer had future-seeing powers and knew exactly when she was going to die (a few days from when she was introduced, at age 16).
Source: Your Days Are Numbered
Cite this Source
Days and Age. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/age/days
Age & Days. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/age/days>.
Days or Age. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/age/days.
Google Ngram Viewer shows how "age" and "days" have occurred on timeline