Meaning 1 · most common
find by chance

To find or discover something or someone unexpectedly, without looking for it.
Examples
I came across an old photo album while cleaning the attic.
A: Where did you get that book?
B: I just came across it at a second-hand shop yesterday.
Common mistake
Not: I came across with an interesting article.
Say: I came across an interesting article.
'Come across' takes the object directly — no 'with' (that changes the meaning).
More on “find by chance”Another example · Tell it apart · Goes with · Tip
Another example
During my research, I came across several interesting articles that changed my perspective.
Tell it apart
I came across an old letter.
He comes across as shy.
Goes with
- come across + find