a hand at

accomplished adept adroit competent experienced practical proficient seasoned skilled smart trained

apt brainy clever crack crackerjack dexterous expert good handy hotdog learned on the ball practiced prepared primed pro professional quick ready really into savvy sharp smooth there tuned-in versant versed vet veteran well-versed whiz wicked wised up

awkward clumsy incapable incompetent inefficient inept inexperienced stupid unable unseasoned unskilled untrained

green ignorant incapacitated unskillful untalented