9-letter words containing u, p, a, r, o
- superatom — a cluster of atoms behaving in certain ways like a single atom
- supernova — the explosion of a star, possibly caused by gravitational collapse, during which the star's luminosity increases by as much as 20 magnitudes and most of the star's mass is blown away at very high velocity, sometimes leaving behind an extremely dense core.
- superroad — an extremely large road
- supinator — a muscle used in supination.
- top quark — a type of quark with a mass of c. 176 to 199 GeV/c2, a positive charge 2⁄3 that of an electron, zero charm, and zero strangeness
- trophaeum — tropaeum.
- ultraposh — extremely posh
- uniparous — Zoology. producing only one egg or offspring at a time.
- unpopular — not popular; disliked or ignored by the public or by persons generally.
- unprofane — characterized by irreverence or contempt for God or sacred principles or things; irreligious.
- up to par — If you say that someone or something is not up to par, you are disappointed in them because they are below the standard you expected.
- up-anchor — to weigh anchor.
- uropygial — of or relating to the uropygium.
- wap forum — (body) The official body developing Wireless Application Protocol.
- wrapround — made so as to be wrapped round something