"Saint" is another word that has been horribly distorted by time and tradition, particularly among Catholics.
They have to be dead, certified "miracle" performers these days. In Paul's day, they were just Christians; note his letters addressed to, "the saints" in various churches.
The GR word is from the word group that includes holy and sanctify... neither of which mean what most people think they mean (see: the Princess Bride, lol).
The word for holy, said in English as "hagios", means "set apart", usually by God. It was long ago confused with a word that we would pronounce "hagnios", which had moral implications in ritual cult practices such as purity washing... where "hagios" has little to no moral implications at all.... it just means set apart by God (not by men or by one's self), and it's antonyms are words meaning, "profane".
English, like ancient Hebrew, is a fairly generalized language where words can mean a lot of different things; post a letter, post on a blog, a fence post, posthaste... where the ancient common GR of the bible, which conveniently died not comparatively long after it's use in the NT, is just the opposite; it is extremely precise and detailed, with word meanings explained by all the dots and marks accompanying the letters giving the exact meaning, tense, purpose, and usage.