Antonyms for the word "scare off" include "attract," "lure," "welcome," "comfort," and "reassure." While "scare off" strongly implies repelling or driving away, these antonyms suggest the opposite: a positive and engaging experience. They signify drawing in, making enticing, and encouraging. So, one can use "attract" to describe a person's friendly demeanor that draws others close, "lure" to describe the bait that draws a fish to a hook, "welcome" to express the warmth and hospitality of a host, "comfort" to describe the soothing effect of a soft blanket, and "reassure" to describe a person's words that calm and soothe another's anxiety.