9-letter words containing a, u, s, f, o
- sulfation — Chemistry. a salt or ester of sulfuric acid.
- sulfonate — an ester or salt derived from a sulfonic acid.
- surf boat — a strong, buoyant rowboat with high ends, adapted for beaching and passing through surf.
- surfboard — a long, narrow board on which a person stands or lies prone in surfboarding.
- ultrasoft — extremely soft
- vouchsafe — to grant or give, as by favor, graciousness, or condescension: to vouchsafe a reply to a question.
- yousafzai — Malala (məˈlælə) born 1997, Pakistani women's rights campaigner; survived an attack by a Taliban gunman (2012); Nobel Peace Prize (2014)