dumm

Commonly means "great" or "awesome" in everyday speech, but can also mean "crazy" or "mad" in an ironic or negative sense. For "dumb," it only fits in that colloquial, mocking use.

Means "crazy," "mad," or "unhinged." It can be neutral or insulting; it's not exactly the same as "stupid," but in speech it can overlap when criticizing behavior.

Means "stupid," "dumb," or "silly" in everyday speech. It can be a mild insult or just show annoyance; very close to "dumm."

Means "mute" or "silent." It describes not speaking, not intelligence. It is not a synonym of "dumm" in meaning.

Usually means "dull," "muffled," or "blunt." It describes sounds, light, or sometimes a dull feeling, but it is not a normal synonym for "stupid."

Means "brazenly stupid" or "cheekily foolish." It emphasizes stupidity combined with audacity and shamelessness.

Means "foolish," "unwise," or "reckless" in a more literary or old-fashioned style. It is softer and more formal than "dumm."

A borrowed form that is rarely used in German. It means "unintelligent" or "not smart," but sounds bookish or foreign and is unnatural in everyday speech.

Means "unreasonable" or "irrational." It highlights a lack of good judgment or reason, not low intelligence. It is close to "dumm" only when criticizing behavior.