In an unfelicitous manner; unhappily, unfortunately.

(mathematics, geometry, group theory) Any of a class of groups whose finite cases are precisely the finite reflection groups (including the symmetry groups of polytopes), but which are more varied ...

(countable, slang, vulgar) A weak person. / (uncountable, slang, vulgar) erectile dysfunction / (countable, slang, vulgar) A penis affected by erectile dysfunction.

(usually transitive, nuclear physics) To blend highly-enriched uranium, typically from decommissioned nuclear weapons, with uranium containing a low concentration of fissile uranium-235 (slightly-e...