What does "follow up" mean?

To take further actions remaining after an event; to continue, revisit, or persist; especially, to maintain communication or verify.

Follow up

Common synonyms include: addendum, afterthought, anamnesis, appendix, associative anamnesis, attend.

verb

verb ·Moderate ·College level

Verb

1
To take further actions remaining after an event; to continue, revisit, or persist; especially, to maintain communication or verify.
"Send a letter, then follow up promptly with a telephone call."
2
increase the effectiveness or success of by further action wordnet
3
pursue to a conclusion or bring to a successful issue wordnet

"Send a letter, then follow up promptly with a telephone call."