Meaning of “mild” - Learner’s Dictionary

mild

adjective uk us /maɪld/
WEATHER

B1 When weather is mild, it is less cold than you would expect:

a mild winter
ILLNESS

When an illness is mild, it is not as serious as it could be:

My doctor said I had a mild form of pneumonia.
WEAK

B2 not having a strong effect:

a mild taste
a mild detergent
KIND

calm and gentle:

He has a very mild manner.

(Definition of “mild” from the Cambridge Learner’s Dictionary © Cambridge University Press)