To adjust to a requirement; regulate:
To test by carefully questioning in order to find out the knowledge, skill, qualifications, etc. of (a student, witness, job applicant, etc.)
Check means to test, examine, compare or inspect something to see if it is as it should be.
(Intransitive) To prove (after an investigation) to be the case / in order.
(Slang) To come to understand (a person).
To announce one's arrival (at a hotel etc.)
Find another word for check-up-on. In this page you can discover 11 synonyms, antonyms, idiomatic expressions, and related words for check-up-on, like: watch, investigate, control, examine, check, look into, check out, suss-out, check-over, go over and check-into.