Aggressive	said of young wine or older wine that hasn't mellowed as it should have done
Astringent	mouth-puckering tannin
Crisp	fresh and positively refreshing, especially whites
Dense	solid color and/or densely packed with flavor, usually positive
Fat	full-bodied with high glycerol, maybe sweet
Firm	good tannin and/or acid
Forward	more mature than you would expect
Green	young and raw, may develop or the grapes may simply have been unripe
Hard	too much tannin or acid, but can be a question of youth and time
Heavy	full-bodied and alcoholic, usually used to indicate imperfect balance, although not in the case of fortified wines
Hollow	wine that has an initial taste and an end taste, but a disappointing lack of flavors in between
Lean	lacking breadth of flavors
Long	wine the taste of which lasts, a very positive feature
Robust	full-bodied, ,sturdy wine, usually red
Round	no hard edges, ready to drink
Sharp	a sharp, acid flavor that may simply need time to soften, mostly whites
Short	no aftertaste, cannot be a high quality wine
Simple	sound, drinkable wine of no great distinction
Smooth	applies to texture, no tannin or acid getting in the way
Structure	as in good firm structure or poor, ,weak structure; the balance and strength of the basic components, ie acid, tannin fruit, alcohol and maybe sugar
Thin	lacking flavor and body
Tough	too much tannin