12-letter words containing o, b, v, s
- unobservance — a failure to comply or observe (a law, custom, etc)
- unobservedly — without having been observed; in an unobserved manner
- unresolvable — not able to be resolved or brought to a satisfactory resolution
- vector boson — one of the three particles that are believed to transmit the weak force: the positively charged W particle, the negatively charged W particle, and the neutral Z 0 particle.
- verbenaceous — belonging to the plant family Verbenaceae.