IPA: /ˈvɔːlti/
KK: /vɔlti/
Having an arched or curved shape, resembling a vault.
The ceiling of the ancient cathedral was beautifully vaulty, creating a sense of grandeur.
Vaulty → It is derived from "vault" (from Old French *valte*, meaning a structure forming a roof) and the suffix "-y" (meaning characterized by). The word "vaulty" describes something that is characterized by or resembling a vault, often in terms of shape or structure.
Think of a 'vault' as a curved structure, and remember that 'vaulty' means something that has the characteristics of that curved shape.