Old
Old adjective - Being of advanced years and especially past middle age.
Usage example: every day the old fisherman set out in his small boat to brave the dangers of the sea
Senior is a synonym for old in new topic. In some cases you can use "Senior" instead the word "Old" as an adjective or a noun, when it comes to topics like elderly, advanced in age.
Mutual synonyms
Both words in one sentence
-
The senior members bitch at each other about who should be "the new Rachel," completely forgetting the gripe they had with the old one.
Source: Series / Glee -
The French Army senior officer corps before and during the disastrous 1940 campaign was populated by old veterans.
Source: Old Soldier -
Senior Power, an old movie meant to teach old people to defend themselves from crime (and mockingly reviewed here), includes the "obscene phone call" scene.
Source: Harassing Phone Call
Cite this Source
Senior and Old. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/old/senior
Old & Senior. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/old/senior>.
Senior or Old. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/old/senior.
Google Ngram Viewer shows how "old" and "senior" have occurred on timeline