wild

adjective, wild·er, wild·est.

living in a state of nature; not tamed or domesticated: a wild animal; wild geese.
growing or produced without cultivation or the care of humans, as plants, flowers, fruit, or honey: wild cherries.
uncultivated, uninhabited, or waste: wild country.
uncivilized or barbarous: wild tribes.
of unrestrained violence, fury, intensity, etc.; violent; furious: wild strife; wild storms.
characterized by or indicating violent feelings or excitement, as actions or a person’s appearance: wild cries; a wild look.
frantic or distracted; crazy: to drive someone wild.
violently or uncontrollably affected: wild with rage; wild with pain.
undisciplined, unruly, or lawless: a gang of wild boys.
unrestrained, untrammeled, or unbridled: wild enthusiasm.
disregardful of moral restraints as to pleasurable indulgence: He repented his wild youth.
unrestrained by reason or prudence: wild schemes.
amazing or incredible: Isn’t that wild about Bill getting booted out of the club?
disorderly or disheveled: wild hair.
wide of the mark: He scored on a wild throw.
Informal. intensely eager or enthusiastic: wild to get started; wild about the new styles.
Cards. (of a card) having its value decided by the wishes of the players.
Metallurgy. (of molten metal) generating large amounts of gas during cooling, so as to cause violent bubbling.