wild
Not controlled or tamed; natural, free, and untamed.
Wild describes something in its natural state, not controlled or tamed by people. A wild animal lives in nature and takes care of itself, unlike pets or farm animals that depend on humans. Wild forests grow without anyone planting rows of trees or mowing paths. Wild strawberries spring up in meadows and taste different from the plump ones you find at the grocery store.
The word also means uncontrolled, chaotic, or extreme. A wild party gets loud and out of hand. A wild storm brings fierce winds and driving rain. When your little brother runs around the house screaming, your parents might tell him to stop acting so wild. A wild guess is one you make without much information, just throwing out whatever comes to mind.
In conversation, people often use wild to mean surprising or hard to believe, as in “That's wild!” when they hear something shocking or amazing. The excitement in the word shows up in phrases like wild with joy or running wild with imagination.
Something wild resists control and predictability. That untamed quality can mean freedom and natural beauty, or it can mean chaos and danger, depending on the situation.