somewhat formal
: existing in large numbers
They had numerous [=many] friends.
She decided to leave for numerous reasons.
The birds are becoming more numerous in this area.
The people I'd like to thank are too numerous to mention/list. [=there are so many of them that I can't mention all their names]
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“Numerous.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/numerous. Accessed 22 Jul. 2026.
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