A no-frills product or service gives you the basic thing and almost nothing extra: no pretty box, no free gift, no extra comfort. Airlines, hotels, and shops use it a lot. A no-frills flight gets you there, but you pay for a drink and the cabin is plain. The word is not always an insult. Some people want no-frills on purpose, because it is cheaper. Still, it does say the thing is not the highest quality — it is enough, not fancy. A frill is an extra bit, like lace on a dress, that makes something look nicer without changing what it does. Though actually, a no-frills company can still do the core job well; the word is about missing extras, not about being unsafe or badly made.