check up

Verb

check up (third-person singular simple present checks up, present participle checking up, simple past and past participle checked up)

1. (most often in phrasal verb "check up on") To verify through brief investigation or revisit for assurance that there are no problems.
   • I dropped by to check up on my friend.
   • Before when he just gave her money and checked up on her his visits where few and far between unless she called and asked for something, which she didn't like doing too much.2006, Marvlous, By Any Means, page 28
2. To verify something's accuracy.
   • He's checking up the figures.
   • The impression of her familiarity was misty and dreamlike. He might have dreamed he thought of such a girl as she. But no! His sober, cool-headed sense checked him up sharply.1927, William Byron Mowery, Pirates Of The Muskeg
3. To seem correct or plausible; to comport with known facts; to check out (with other facts).
   • The numbers she provided check up with my own data.