Smart Casual. Oxford defines smart casual for men as neat conventional yet relatively informal in style. According to Mr Porters Style Advice page the smart casual gamut comprises pretty much anything smarter than a tracksuit but less formal.
Smart-casual dress is a step up from business casual but not as dressy as formal work attire. If you havent seen my post with a business casual attire guide check it. Smart casual is a pair of dark slim jeans a blazer and desert boots.
Smart casual means nothing so it can mean anything.
Then theres smart casual whatever that is and business and business informal. Super smart with super casual is doable but get a. If you look at the urban dictionary it defines smart casual as a nonsensical dress code that people slap on to events parties and workplaces. Smart casual is also chinos a patterned shirt and a bomber jacket.