It is "to err on the safe side" or "err on the side of caution."
a.i.r airU JUST SPELLED IT, JACKIE!!!!!!!!!!
The way you have spelt it is correct, but you just need to put them both together to make one word. safeguarding.
Generically, a horn makes a "honk." But the louder sound of an air horn is either a "blare" or a "blast."There is no exact onomatopoeia for the sound, as there is for the so-called "ah-oo-gah" of a...
To "take in air" is to breathe, or respire. The word for taking in a breath is to inhale (inhaling, inhalation). Letting air out, you exhale.