Ma'anar ƙamus na kalmar "da kyau" tana cikin hanyar da ke nuna yarda, goyon baya ko kyakkyawar ra'ayi ga wani ko wani abu. Yana nufin bayyana ra'ayi mai kyau ko hukunci, ko samar da fa'ida ko fa'ida ga wani ko wani abu. Hakanan yana iya nuna cewa an yi wani abu ko an gane shi a hanya mai fa'ida, mai fa'ida, ko mai daɗi. Gabaɗaya, ana amfani da kalmar “da kyau” don bayyana wani abu da ake kallo da kyau ko kuma a cikin kyakkyawan yanayi.