Meaning of the word "To be on the safe side" in English

What does "To be on the safe side" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

To be on the safe side

US /tu bi ɑn ðə seɪf saɪd/
UK /tu bi ɒn ðə seɪf saɪd/

Idiom

to take extra precautions to avoid risk or danger

Example:
I'll take an umbrella, just to be on the safe side, even though it's sunny now.
You should double-check the doors to be on the safe side.