dou·ble–check 
/ˌdʌbəlˈtʃɛk/ verb
dou·ble–checks; dou·ble–checked; dou·ble–check·ing /ˌdʌbəlˈtʃɛk/ verb : to check (something) again in order to be certain [+ obj] ▪ Be sure to double-check your answers before handing in your test. [no obj] ▪ I thought I mailed the letter already, but let me double-check.
— double check noun, plural ∼ checks [count]
▪ Did you do a double check of the list?
▪ Did you do a double check of the list?
