constantly double-checking
phraseUK /ˈkɒnstəntli ˈdʌbəl ˈtʃekɪŋ/
US /ˈkɑːnstəntli ˈdʌbəl ˈtʃekɪŋ/
Checking something again and again, all the time.
She keeps constantly double-checking her homework answers before turning it in.
OTHER MEANINGS
2. Checking something a second time over and over without stopping.
He was constantly double-checking the door lock before bed.
3. Looking at the same information again and again because you feel unsure.
Constantly double-checking the schedule made her more worried, not less.
4. Repeating a check many times to make sure nothing is wrong.
The pilot is constantly double-checking the controls during the flight.