check up

verb

1. 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.”

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.”

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.”