Chiraviro (a promise) zvinoreva chinhu chakavimbiswa. Raviro izita remunhu rinowanopiwa mwanasikana. VaMambwe vanoti ulai, cilayo kana mulayo (a promise) vachireva chiraviro. VaMambwe vanoti cilayano (a mutual promises) vachireva chivimbisano. VaMambwe vanoti cilayano (a mutual promise, contract, agreement; to come to an understanding) vachireva chibvumirano. VaBemba vanoti cilayo (n. promise) vachireva chivimbiso. VaRwanda vanoti kurahira (to swear, vow) vachireva chiraviro.