Vanilla
Vanilla is the BDSM community's term for conventional sexual activity that does not include kink, BDSM practices, or power exchange. "Vanilla sex" is sex without BDSM elements. A "vanilla relationship" is one without D/s dynamics. The term comes from vanilla ice cream being considered the default, plain flavor.
This is a description, not a ranking. Vanilla is not lesser-than, and kinky is not superior. The BDSM community at its best uses the word neutrally, the same way you might describe a music preference. Some people enjoy jazz. Some prefer classical. Neither is wrong. When someone uses "vanilla" as a put-down, that reflects their own insecurity rather than anything meaningful about conventional sexuality.
The line between vanilla and kinky is blurry. A couple who pulls hair during sex might not think of themselves as kinky. Another couple with a formal D/s dynamic clearly sits on the kink side. Most people fall somewhere in the middle, and where they land can shift over time. Someone who lived vanilla for decades might discover a fetish later in life. Someone deeply into BDSM might go through periods where they want nothing more than straightforward intimacy.
Relationships between vanilla and kinky partners happen frequently, and they can work well with honest communication. Problems arise when a kinky partner hides their needs or when a vanilla partner feels pressured to participate in activities that do not interest them. The beginner's guide covers how to approach these conversations.
Vanilla also appears in compound terms. "Vanilla-passing" describes kink dynamics that look conventional from the outside. "Vanilla with sprinkles" is a lighthearted way some people describe mostly conventional sex with occasional kinky elements. These playful labels point to the same truth: sexuality is a spectrum, and most people do not sit neatly at either end.