Nouns

(n)wild, natural state, state of naturea wild primitive state untouched by civilization“he lived in the wild”, “they collected mushrooms in the wild”
(n)wilderness, wilda wild and uninhabited area left in its natural condition“it was a wilderness preserved for the hawks and mountaineers”

Adjectives

(a)wildmarked by extreme lack of restraint or control“wild talk”, “wild parties”
(a)wild, untamedin a natural state; not tamed or domesticated or cultivated“wild geese”, “edible wild plants”
(s)wildin a state of extreme emotion“wild with anger”, “wild with grief”
(s)wilddeviating widely from an intended course“a wild bullet”, “he threw a wild pitch”
(s)violent, wild(of colors or sounds) intensely vivid or loud“a violent clash of colors”, “her dress was a violent red”, “a violent noise”, “wild colors”, “wild shouts”
(s)baseless, groundless, idle, unfounded, unwarranted, wildwithout a basis in reason or fact“baseless gossip”, “the allegations proved groundless”, “idle fears”, “unfounded suspicions”, “unwarranted jealousy”
(s)raving mad, wild, ravingtalking or behaving irrationally“a raving lunatic”
(s)hazardous, risky, wildinvolving risk or danger“skydiving is a hazardous sport”, “extremely risky going out in the tide and fog”, “a wild financial scheme”
(s)fantastic, wildfanciful and unrealistic; foolish“a fantastic idea of his own importance”
(s)godforsaken, waste, wildlocated in a dismal or remote area; desolate“a desert island”, “a godforsaken wilderness crossroads”, “a wild stretch of land”, “waste places”
(s)crazy, wild, dotty, gagaintensely enthusiastic about or preoccupied with“crazy about cars and racing”, “they are dotty about each other”, “gaga over the rock group's new album”
(s)barbarian, barbaric, savage, uncivilized, uncivilised, wildwithout civilizing influences“barbarian invaders”, “barbaric practices”, “a savage people”, “fighting is crude and uncivilized especially if the weapons are efficient” (Margaret Meade), “wild tribes”
(s)angry, furious, raging, tempestuous, wild(of the elements) as if showing violent anger“angry clouds on the horizon”, “furious winds”, “the raging sea”

Adverbs

(r)rampantly, wildin an uncontrolled and rampant manner“weeds grew rampantly around here”
(r)wildin a wild or undomesticated manner“growing wild”, “roaming wild”