mild
Not very strong, gentle, or easy to handle.
Mild describes something gentle, not extreme, or not very strong. When the weather is mild, it's pleasantly comfortable: not too hot, not too cold, just right for playing outside without a heavy jacket. A mild case of the sniffles means you're a little sick but not seriously ill. Mild salsa has just a hint of spice instead of making your mouth burn.
The word often suggests something that's present but not intense or harsh. A teacher might give you a mild warning about talking in class: a gentle reminder rather than serious trouble. Mild soap won't irritate your skin. A mild winter means temperatures stay relatively warm with little snow or ice.
Mild can also describe someone's personality or temperament. A person with a mild manner speaks softly and doesn't get angry easily. They're calm and easygoing rather than loud or aggressive. When someone has a mild reaction to bad news, they stay composed instead of getting upset.
The opposite of mild is usually severe, harsh, strong, or extreme. Mild describes a comfortable middle ground where things are noticeable but not overwhelming.