know ABCs



know one's ABCs

Fig. to know the alphabet; to know the most basic things (about something). Bill can't do it. He doesn't even know his ABCs. You can't expect to write a letter when you don't even know your ABCs.
See also: ABC, know

Common Names:

NameGenderPronouncedUsage
Gwenneth-Welsh (Rare)
AodhagÁN-Irish, Scottish
Ritu-Indian, Hindi, Marathi
Iser-Yiddish
Ashling['æʃliŋ]
Agostino-Italian