How to say "dangerous, dangerously" in Russian?

Опасно

"dangerous, dangerously" is Опасно in Russian.

Опасно means "dangerous, dangerously" in English.

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Word #2496 of 4,000 by frequency in Russian — level B2.

Example

Опасно оставлять детей одних дома.

It is dangerous to leave children home alone.