1.Definition: humble in spirit or manner; suggesting retiring mildness or even cowed submissiveness

Related Adjective(s):meek, modest

2.Definition: mild and pleasant

"The climate was mild and conducive to life or growth"

Related Adjective(s):balmy, soft

3.Definition: moderate in type or degree or effect or force; far from extreme

"A mild winter storm", "A mild fever", "Fortunately the pain was mild", "A mild rebuke", "Mild criticism"