mal-
/mæl/combining form
1
- in an unpleasant degree表示“坏”, “恶”, “不良”：
malodorous.
2
- in a faulty manner表示“有缺点的”, “有故障的”：
malfunction.
2.1
- in an improper manner表示“不合适的”, “不正常的”：
malpractice.
2.2
- in an inadequate manner表示“不充分的”, “不足的”：
malnourishment.
3
- not表示“不”：
maladroit.
词源
from French mal, from Latin male 'badly'.