crop up
phrasal verbPart ofcrop
crop up — phrasal verb
1. to appear or happen without warning, especially when not expected or wanted — us
1.phrasal verb
Definition
to appear or happen without warning, especially when not expected or wanted — used for problems, questions, opportunities, or people who arrive suddenly
Example
Several unexpected issues cropped up during the final week of construction.
Hannah's old friend from university cropped up at the conference after ten years without contact.
If any questions crop up during the meeting, please write them down for later.