In the type world, "Std" stands for Standard , referring to the character set (usually Western European languages). A "Replica Std" font is a cloned, illegally traced, or renamed version of a popular commercial font.
Don't let "Replica Std" ruin your reputation. If a project doesn't have the budget for the original, use a legitimately free font. Your kerning (and your lawyer) will thank you. Title: Spotting the Fake: What the "Replica Std" Font Tells You About Your Luxury Goods
At first glance, it looks like a victory for designers on a tight budget. Why pay $300 for a professional typeface when you can download "Replica Std" for free? The answer lies not in the letterforms, but in the metadata.
In the world of counterfeits, "Std" is not a font file; it’s the standard of failure. High-end brands (Louis Vuitton, Rolex, Nike) commission bespoke proprietary typefaces. These fonts cost millions to develop. Replicas, however, use cheap digital substitutes.