reagieren

Usually means to reply with a remark, often in a discussion or argument; it sounds somewhat formal or literary, not like the general meaning of react.

Means to answer something directly; it refers to a concrete response to a question, message, or request, not general reacting.

Means to behave in a certain way; it emphasizes manner of conduct rather than a single reaction to an event.

Means to act or behave; it focuses on deliberate action and decisions rather than a reaction to a stimulus.

Means to act or operate; it often sounds more formal and can refer to purposeful behavior in a situation.

Means to answer a question, message, or call; it is a direct and specific response, not general reacting.

The common verb “to answer”; used for replying to a question, letter, or address, and not for the broader idea of reacting to an event.

As a noun or in fixed constructions, it means “behavior”; it describes how someone acts in general, not an immediate reaction.

Means a counter-reaction; it emphasizes a response to something, often in scientific, political, or descriptive contexts.

The closest match in meaning: a general reaction to an event, stimulus, or situation; it can be emotional, physical, or social.

Means feedback effect or repercussion; it emphasizes the influence that something has back on the original object or situation.