adept
Cross references: 1. proficient 1. ad.ept \'ad-.ept\ n [NL adeptus, alchemist who has attained the knowledge of how to change ba]se metals into gold, fr. L, pp. of adipisci to attain, fr. ad- + apisci to reach - more at APT : a highly skilled or well-trained individual : EXPERT 2. adept \*-'dept\ \-'dep-(t)le-\ \-'dep(t)-n*s\ aj : thoroughly proficient : EXPERT - adept.ly av