Nannyish is an adjective that describes behavior that is overprotective, controlling, or intrusive in a way that is similar to how a nanny might act. Synonyms for nannyish include smothering, hovering, micromanaging, coddling, interfering, overbearing, meddlesome, and suffocating. These words all convey a sense of excessive involvement in someone else's life, often to the point of being annoying or intrusive. While some people might appreciate this kind of attention, others may feel stifled and resentful. It's important to be aware of how your behavior might be perceived by others and to find a balance between being caring and supportive without being overbearing.