adept
Concise Oxford English Dictionary © 2008 Oxford University Press:
adept
▶adjective /ˈadɛpt, əˈdɛpt/ very skilled or proficient. ▶noun /ˈadɛpt/ a person who is adept at something.
– derivatives
adeptly adverb,
adeptness noun.
adeptly adverb,
adeptness noun.
– origin C17: from L. adept-, adipisci ‘obtain, attain’.
'adept' also found in these Oxford entries:

