Common Meanings
1
fēng疯
Referring to a mental illness, often meaning to be mad, insane, or deranged, typically due to stress or other pressures.
他最近工作压力太大，都快要疯狂了。
He's been under too much work pressure recently, he's almost going crazy.
Wild, extravagant, or nonsensical talk/behavior.
他喝醉后开始说疯话，让大家都觉得很尴尬。
After he got drunk, he started talking nonsense, making everyone feel very awkward.
For crops or plants, to grow excessively vigorously but fail to bear fruit.
这几棵菜长疯了，叶子倒是绿油油的，却没结出果实来
These vegetable plants have grown wildly; their leaves are lush and green, but they haven't produced any fruit.