IPA: /ˈseɪfər/
KK: /ˈseɪfər/
More secure or less dangerous than something else.
Wearing a seatbelt makes driving safer.
Safer → It is formed from "safe" (from Old French *sauf*, meaning free from danger) and "-er" (a suffix used to form comparative adjectives). The word "safer" means more free from danger or risk than something else.
Think of being 'more free from danger' — 'safe' means free from danger, and '-er' indicates a comparison, so safer means more secure.