Dexter \dex-ter\ as a boy's name is pronounced DEKS-ter. It is of Latin and Old English origin, and the meaning of Dexter is "right-handed, fortunate; one who dyes". Originally from Greek "dexi" meaning "worship", which was transferred to "using the right hand", hence "dexi hand". In Old English, an occupational name from "deag estre". Football player Dexter Carter.
For more information, see also the related name Dyer.